William Pepper Jr: Touch panel system and method. Peptek Incorporated, Jim Zegeer, October 6, 1981: US04293734 (326 worldwide citation)

A general method is disclosed for accurately determining the location or position of a source or sink of electric current on the surface of a resistance element or impedance layer. Touch panels are described that detect the presence of a user's finger on such surface, and produce output signals corr ...

John M Pawelchak, Yu Chang J Wang, Anthony L LaVia: Lyophilized hydrocolloio foam. E R Squibb & Sons, Lawrence S Levinson, Stephen B Davis, October 6, 1981: US04292972 (180 worldwide citation)

A lyophilized foam sponge product having medically useful hemostatic and adhesive properties formed from the hydrocolloids, gelatin, pectin, and sodium carboxymethylcellulose and having a density of from about 0.01 to about 0.10 grams/cc. The gelatin is present at from about 20% to about 80% by weig ...

Adrian E Popa: Millimeter wave transmission line using thallium bromo-iodide fiber. Hughes Aircraft Company, Kenneth W Float, William H MacAllister, Paul M Coble, October 6, 1981: US04293833 (174 worldwide citation)

Millimeter wave transmission lines are disclosed for propagating electromagnetic waves of a wavelength ranging from about 10 mm to about 0.4 mm. The transmission lines comprise a fiber of co-crystallized thallium bromo-iodide consisting of from about 40 mole percent to about 46 mole percent thallium ...

Nelson H Ludwig, Earl E Ose: Controlled release formulations and method of treatment. Eli Lilly and Company, Charles W Ashbrook, Arthur R Whale, October 6, 1981: US04293539 (148 worldwide citation)

Controlled release formulations useful in the prolonged treatment and control of microbial infections in animals are comprised of a microbial agent intimately dispersed throughout a copolymer derived from lactic acid and glycolic acid. A method for providing protection to animals for extended period ...

Colin Wilkes, Milton B Hilt: Dual stage-dual mode low nox combustor. General Electric Company, Jerome C Squillaro, October 6, 1981: US04292801 (121 worldwide citation)

An improved dual stage-dual mode combustor capable of reduced emissions of nitrogen oxide from a combustion turbine is disclosed. The combustor includes two combustion chambers separated by a throat region. Fuel is initially introduced and ignited in the first chamber. Thereafter, fuel is introduced ...

Thomas J Fogarty, Albert K Chin: Dilatation catheter apparatus and method. Thomas J Fogarty, Naylor Neal & Uilkema, October 6, 1981: US04292974 (117 worldwide citation)

A dilatation catheter is provided with an inflatable section which in its non-inflated condition may have a diameter several times that of the balance of the catheter. Means are provided to axially twist the inflatable part of the catheter to reduce its diameter in its non-inflated condition to a si ...

Harold A Nash, Daniel R Mishell Jr: The Population Council, Brumbaugh Graves Donohue & Raymond, October 6, 1981: US04292965 (110 worldwide citation)

This invention relates to an improved intravaginal ring for use as a contraceptive comprising an inert elastomer core, a medicated layer encircling the core and an outer inert elastomer layer and method of manufacturing the intravaginal ring.

Noboru Higuchi, Teruo Yano, Masahiro Ohnishi: Method for producing ceramic honeycomb filters. NGK Insulators, Stevens Davis Miller & Mosher, October 6, 1981: US04293357 (105 worldwide citation)

A ceramic honeycomb filter having a large filter area and a low pressure loss is produced by adhering a film on an opening end surface of a porous ceramic honeycomb structural body having a large number of parallel channels extending therethrough, boring holes at a given portion of the film or adher ...

Michael Portugall, Heino Finkelmann, Helmut Ringsdorf: Liquid-crystalline polymer phase having a cholesteric structure, processes for its preparation and its use. BASF Aktiengesellschaft, Keil & Witherspoon, October 6, 1981: US04293435 (104 worldwide citation)

A liquid-crystalline polymer phase having an induced cholesteric structure comprises a component having a chiral structure and a component having a nematic structure and contains a polymer with nematogenic units of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, n is an integer from 1 to ...

Kalman Vadasz: Process for the preparation of sweetener containing product. Chimicasa, Richard P Crowley, October 6, 1981: US04293570 (88 worldwide citation)

An apparatus and process for the preparation of cryptocrystalline sweeteners, such as sorbitol, by the spraying of a heated, aqueous, low-viscosity, high-solids, sweetener solution, employing a cool, compressed, inert gas, through a nozzle into a fine spray and into a cooler atmosphere, to form very ...