Now showing items 21-30 of 506
Optic devices formed from melt processable thermoplastic materials having a high refractive index
(United States Patent and Trademark Office, 1999-12-28)
This invention relates generally to optic devices such as ophthalmic lenses, lens blanks, and lens preforms, made from a thermoplastic material of a specific formula and a process for forming the same.
Reissert compound of bisbenzimidazole
(United States Patent and Trademark Office, 1990-12-11)
A Reissert compound of bisbenzimidazole can be formed by first reacting benzimidazole with an aliphatic diacid chloride to form bisbenzimidazole and then reacting the bisbenzimidazole with an aliphatic acid chloride and ...
Expression of a heterologous protein C in mammary tissue of transgenic animals using a long whey acidic protein promoter
(United States Patent and Trademark Office, 2001-07-17)
An isolated DNA sequence which regulates the expression of a heterologous gene composed of a mouse whey acidic protein promoter having a length of greater than about 2.4 kb extending upstream from the unique KpnI site in ...
Computationally efficient control allocation
(United States Patent and Trademark Office, 2001-08-21)
A computationally efficient method for calculating near-optimal solutions to the three-objective, linear control allocation problem is disclosed. The control allocation problem is that of distributing the effort of redundant ...
Automatic color and grain sorting of materials
(United States Patent and Trademark Office, 1998-06-02)
A system for automatically color and grain sorting materials includes a pair of color cameras positioned to view the top and bottom faces, respectively, of each part. A computer analyzes the data from the top and bottom ...
Composite materials including metallic matrix composite reinforcements
(United States Patent and Trademark Office, 1998-04-28)
Composite materials are disclosed comprising a continuous matrix with composite reinforcements therein. The composite materials may include a continuous metal, metal alloy or intermetallic matrix with intermetallic matrix ...
Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles
(United States Patent and Trademark Office, 1998-09-29)
A method and apparatus are disclosed for the microbubble flotation separation of very fine and coarse particles, especially coal and minerals, so as to produce high purity and high recovery efficiency. This is accomplished ...
Controlled dopant diffusion for fiber optic coupler
(United States Patent and Trademark Office, 1998-09-15)
Uniformity of optical coupling of optical elements such as couplers and splitters is improved by heat treatment which causes dopants in the core of an optical fiber to diffuse into material from the cladding layer of the ...
Wear reducing compositions and methods for their use
(United States Patent and Trademark Office, 1999-03-09)
Compositions for reducing wear and friction of rubbing surfaces including mixtures of a cyclic amide and a monoester formed by reacting a dicarboxylic acid and a polyol in substantially equimolar amounts where the dicarboxylic ...
Compositions and methods for controlling pest insects
(United States Patent and Trademark Office, 1999-02-23)
Compositions of a purine, a xanthine oxidase inhibitor and/or a dihydrofolate reductase inhibitor, and methods of using same, for controlling the growth of pest insects which salvage, store, or excrete their nitrogenous ...