High molecular weight polyethersulfones
What is claimed is: 1. A process to prepare polyethersulfone polymers having a molecular weight from between 20,000 to 125,000 which comprises reacting substantially equimolar amount of a 3,3,'5,5'-te... Read More
Inventors: Hartmann, Ludwig A.;, Assignee: ICI Americas Inc. (Wilmington, DE) |
Magnetic recording crystals, process for producing same, and magnetic recording webs using same
We claim: 1. Gamma ferric oxide consisting essentially of crystals that have an acicularity ratio of at least 15 and an average crystal length less than 0.5 micron and which comprise alkali metal ions... Read More
Inventors: Audran, Roger G. L.; Pingaud, Bernard J.;, Assignee: Eastman Kodak Company (Rochester, NY) |
Process for the production of insoluble sulfur
OF THE INVENTION In accordance with the present invention there is provided a process for the preparation of an insoluble sulfur production comprising the steps of vaporizing sulfur, mixing the vapor... Read More
Inventors: Shim, Kyung S.;, Assignee: Stauffer Chemical Company (Westport, CT) |
Polyconjugated oxidation-reduction polymers, processes for the electro-chemical regeneration of
We claim: 1. Process for electro-chemical oxidation or reduction of correspondingly previously reduced or oxidized solid, water-insoluble, electrically conductive, polyconjugated oxidation-reduction p... Read More
Inventors: Buvet, Rene; Vallot, Roger; Messina, Richard; Gal, Jacques; Yu, Liang-Tse;, Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR) (Neuilly-sur-Seine, FR) |
Aromatic polyesters, processes for their preparation, and their use for the preparation of molecularly reinforced polymers
We claim: 1. Polyesters of the formula (I) ##STR9## in which the radicals R.sup.1 and R.sup.4, independently of one another, represent hydrogen; an arylalkyl-, arylalkylether-, arylalkylthioether radi... Read More
Inventors: Heitz, Walter; Kampschulte, Uwe; Bottenbruch, Ludwig; Freitag, Dieter; Dicke, Hans-Rudolf;, Assignee: Bayer Aktiengesellschaft (Leverkusen, DE) |
Merozoite surface glycoproteins
We claim: 1. An essentially pure P. falciparum glycoprotein, which glycoprotein: (a) is antigenic; (b) has an isoelectric point of about 5.5; (c) is present on the surface of the P. falciparum merozoi... Read More
Inventors: Reese, Robert T.; Howard, Randall F.; Stanley, Harold A.;, Assignee: Scripps Clinic and Research Foundation (La Jolla, CA) |
Multi-element flat electrode especially useful for HF-surgery
This object is realized in accordance with the invention through the provision of three sub-electrodes having an essentially triangular shape. In accordance with a first embodiment of the invention, p... Read More
Inventors: Hagen, Uwe; Redler, Udo;, Assignee: Siemens Aktiengesellschaft (Berlin and Munich, DE) |
Container for infusion solutions
It is an object of the present invention to provide a container for infusion solutions which both permits an infusion solution to be mixed with ingredients with little contamination and furthermore al... Read More
Inventors: Recker, Antonius; Rycyk, Manfred; Wesseler, Matthias;, Assignee: Schiwa GmbH (Glandorf, DE) |
Catheter with flexible cutter
What is claimed is: 1. A catheter for opening obstructions in blood vessels comprising: a thin, flexible, cylindrical tube adapted for insertion in a vessel adjacent to an obstruction; an annular cutt... Read More
Inventors: Husted, Royce H.;, Assignee: |
Method for diagnosis of atherosclerosis
What is claimed is: 1. A method for diagnosing atherosclerosis, said method comprising: injecting a porphyrin solution into the blood vessels to be examined; detecting the quantity of porphyrins absor... Read More
Inventors: Spears, J. Richard;, Assignee: The Beth Israel Hospital Association (Boston, MA) |
Spinal joint
It is obvious that it is necessary to put very rigorous demands upon such spinal joints. It is thus necessary that the bone screws may be locked to the blocks, that the spinal joints may be locked rel... Read More
Inventors: Olerud, Sven;, Assignee: |
Polyurethanes containing poly(perfluoroalkylene oxides) units
OF THE INVENTION The linear hydroxy-terminated poly(perfluoroalkylene oxide) reactants or prepolymers used in this invention are preferably those of the general formula: R--CF.sub.2 O--(CF.sub.2 CF.s... Read More
Inventors: Mitsch, Ronald A.; Zollinger, Joseph La Mar;, Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN) |
Method and device for the manufacture of a high optical quality transparent plastic sheet
OF THE PREFERRED EMBODIMENTS The invention comprises a reactive pouring or spraying onto an support of a mixture of an aliphatic isocyanate component and a polyol component, which are capable of form... Read More
Inventors: Bravet, Jean-Louis; Daude, Gerard; Crux, Noel;, Assignee: Saint-Gobain Vitrage (Courbevoie, FR) |
Pro-drug forms of digoxin and method of preparing and using same
OF THE INVENTION Using stoichiometric amounts of each reactant, the digoxin derivatives of this invention can be prepared in accordance with the procedures outlined below. NATURALLY OCCURRING AMINO A... Read More
Inventors: Bodor, Nicolae S.;, Assignee: Interx Research Corporation (Lawrence, KS) |
Monoazo dyestuffs containing substituted amino triazine
OF THE INVENTION Specific examples of an alkylamine, an alkoxyalkylamine, an arylamine, an aralkylamine, an alkanolamine and an alkarylamine each having 6 to 18 carbon atoms corresponding to the resi... Read More
Inventors: Kawashita, Hideo; Ota, Mitsuhiro;, Assignee: Taoka Chemical Company, Limited (Osaka, JP); Sumitomo Chemical Company, Limited (Osaka, JP) |
Laser heated intravascular cautery cap assembly
What is claimed is: 1. An improved intravascular cautery cap construction, including a closed curved outer sidewall extending symmetrically about an axis, an inner sidewall extending concentrically wi... Read More
Inventors: Rink, Dan; Rink, John; Lee, Garrett;, Assignee: Xintec Corporation (Oakland, CA) |
Apparatus for treatment of tumors
General Description of the Drug Each of the drugs may be classified into one of two classes, which are: (1) each molecule of the drug aggregates in water to aggregates having a combined molecular wei... Read More
Inventors: Dougherty, Thomas J.; Potter, William R.; Weishaupt, Kenneth R.;, Assignee: Health Research, Inc. (Buffalo, NY) |
Paste insecticidal compositions
We claim: 1. An insecticidal paste composition for application from a pressurized container for destroying cockroaches which comprises, by weight, 30% to 50% corn syrup, 0.25% to 2.5% of a pentadienon... Read More
Inventors: Geary, Daniel C.;, Assignee: The Clorox Company (Oakland, CA) |
Cartridge soldering iron
It is, therefore, an object of this invention to provide a cartridge-type soldering iron which permits interchangeability of the cartridges. It is another object of this invention to provide a replace... Read More
Inventors: Cowell, Mark J.;, Assignee: Metcal, Inc. (Menlo Park, CA) |
Apparatus for monitoring the application of neutral electrodes on a patient undergoing high frequency electro-surgery
It is an object of the present invention to develop equipment which monitors the application of neutral electrodes to the patient during high-frequency surgery in such a way that warning signals and/o... Read More
Inventors: Farin, Gunter; Geiselhart, Franz; Klett, Johannes;, Assignee: Erbe Elektromedizin GmbH (Tubingen, DE) |
Ophthalmic topical use of collagen cross-linking inhibitors
OF THE PREFERRED EMBODIMENT The pharmacologically suitable composition which may be employed in the treatment of this invention comprises a carrier and a collagen cross-linking inhibitor. The carrier... Read More
Inventors: Moorhead, Louise C.;, Assignee: Board of Regents, University of Texas (Austin, TX) |
Compositions comprising 1-substituted azacycloalkanes
OF THE INVENTION The N-alkyl substituted azacycloalkanes useful as penetration-enhancing additives in the compositions of the instant invention may be made by the methods described below. Typical exa... Read More
Inventors: Peck, James V.; Minaskanian, Gevork;, Assignee: Whitby Research, Inc. (Irvine, CA) |
Laser debridement of wounds
What is claimed is: 1. The method of debridement of eschar from a burn wound comprising the steps of: producing a pulsed laser beam with individual pulses sufficiently energetic to ablate a layer of e... Read More
Inventors: Franken, Peter A.; Hill, Alan E.;, Assignee: |
Endoscope with overload protective device
This invention relates to an overload protective device for endoscopes to improve operation and endurance and to avoid over-tensioning of the control wires or fatigue failures caused by repeat overloa... Read More
Inventors: Bruce, Douglas M.; Cooper, Thomas G.; Phetteplace, James E.; Rosewarne, Joseph F.;, Assignee: Acuson Corporation (Mountain View, CA) |
Electrosurgical trocar assembly with bi-polar electrode
In accordance with the invention, a trocar device or assembly is provided which overcomes the problems with prior art trocar devices discussed above. The trocar device of the invention comprises an el... Read More
Inventors: Gentelia, John S.; Williams, Frank R.; Wheatley, William C.; Sevilla, Ernesto G.; Longo, Sharyn E.; Forbey, Deborah E.;, Assignee: Conmed Corporation (Utica, NY) |
Lubricious yet bondable catheter channel sleeve for over-the-wire catheters
In accordance with this invention, the inner tubular element which separates the axial and annular passages of the catheter which serve as the guidewire and inflation lumens, respectively, is in two p... Read More
Inventors: Kraus, Jeff L.; Matani, Nitin;, Assignee: Danforth Biomedical, Inc. (Menlo Park, CA) |
Method for heating biocompatible implants in a thermal packaging line
An advantage of the present invention is to provide a thermal packaging unit for a biocompatible implant which includes a self-contained heating mechanism. In this regard, a related object of the pres... Read More
Inventors: Wiley, Roy C.; Sarver, David R.;, Assignee: Biomet, Inc. (Warsaw, IN) |
Surgical instrument
I claim: 1. A surgical instrument for dilatation and enlargement of the corpora cavernosa of the penis for use in surgical operations for the implantation of a penile prosthesis, said instrument havin... Read More
Inventors: Barbara, Mariano R.;, Assignee: |
Expandable catheter having hydrophobic surface
A catheter tubing comprises a thermoplastic, elastomeric, hydrophilic base polyetherurethane (HPEU) and a coating of a hydrophobic polymer laminated thereon. The HPEU has a hard segment (HS) content o... Read More
Inventors: Lambert, James M.; Solomon, Donald D.; Rhodes, Delmer R.;, Assignee: Becton, Dickinson and Company (Franklin Lakes, NJ) |
Zero stasis catheter
I claim: 1. A catheter, comprising: an elongated shaft having an inflation lumen extending along the shaft, and a drainage lumen extending through the shaft, said catheter having a proximal end, a dis... Read More
Inventors: Rosenberg, Philip;, Assignee: The Kendall Company (Boston, MA) |
Liquid Purification 
