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| Number | Title | Issue Date |
| D586465 | Handheld lancing device | 02/10/2009 |
| 7300152 | Contact lenses and methods for their design The invention provides lenses that are designed by taking into account one or more of pupil size, field, and decentration. ... | 11/27/2007 |
| 7216978 | Method for evaluating eyelid movement and contact lens position A method for designing contact lenses is provided in which direct correlation is made between an individual's subjective assessment of the lens' performance with the objective measurement of one or both of on-eye lens position and eyelid movement. The method permits... | 05/15/2007 |
| 6830712 | Deformable molds and methods for their use in the manufacture of ophthalmic lenses The present provides deformable molds and methods for manufacturing ophthalmic lenses using deformable molds. The molds of the invention may be used in the custom manufacture of ophthalmic lenses. ... | 12/14/2004 |
| 6746121 | Defocus and astigmatism compensation in a wavefront aberration measurement system Defocus and astigmatism compensation methods and apparatuses for use in an aberration measurement system. The apparatuses including reflectors for altering the optical distance between a pair of lenses passing a wavefront without changing the physical distance betwe... | 06/08/2004 |
| 6630083 | Methods and compositions for the manufacture of ophthalmic lenses The present invention provides methods and compositions for producing lenses by casting. The processes utilize a two-stage, ultraviolet cure to provide a fast and reliable method for producing ophthalmic lenses.... | 10/07/2003 |
| 6547391 | Ocular aberration correction taking into account fluctuations due to biophysical rhythms The invention provides correction of wavefront aberrations of the eye that take into account fluctuations in the aberrations due to biophysical rhythms. Correction is provided for an intermediate value of these fluctuations of the wavefront aberrations. T... | 04/15/2003 |
| 6455653 | Compositions and methods for the manufacture of ophthalmic lenses The invention provides compositions for producing lenses by casting. The compositions are useful in producing ophthalmic lens by casting of a surface or layer onto a preform.... | 09/24/2002 |
| 6206520 | Contact lenses with contoured edges The invention provides contact lenses that have contoured lens edges that improve lens handling and comfort.... | 03/27/2001 |
| 6176578 | Toric contact lenses The invention provides toric contact lenses that exhibit good fit and good on-eye orientation regardless of whether the lens has a plus or a minus spherical power.... | 01/23/2001 |
| 6087415 | Biomedical devices with hydrophilic coatings Biomedical devices with stable, hydrophilic and antimicrobial coatings are provided. The coatings are formed using a coupling agent to bond a carboxyl containing hydrophilic coating to the surface by ester or amide linkages.... | 07/11/2000 |
| 6086203 | Progressive addition lenses The invention provides progressive addition lenses in which lens unwanted astigmatism is reduced and channel width through the intermediate and near vision zones is increased as compared to conventional progressive addition lenses. This result is achieved... | 07/11/2000 |
| 5880317 | Preparation of 1,1,2,3,3-pentafluoropropane The present invention relates to a process for the reduction dechlorination of ClCF2 CFClCF2 Cl to HCF2 CHFCF2 H comprising the step of contacting 1,2,3-trichloropentafluoroethane and H2 over a cataly... | 03/09/1999 |
| 5785822 | Process for separating difluoromethane The present invention provides a method for separating dichlorodifluoromethane from difluoromethane. More specifically, a process is provided for separating dichlorodifluoromethane and difluoromethane using azeotropic distillation.... | 07/28/1998 |
| 5762897 | Method for manufacturing hydroxylamine An improved ion exchange process for purifying and/or concentrating hydroxylamine from an aqueous solution comprising hydroxylammonium ion and counter anions wherein ion exchange process conditions including effluent pH, effluent conductivity, and ion exc... | 06/09/1998 |
| 5763708 | Process for the production of difluoromethane The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.... | 06/09/1998 |
| 5736063 | Non-azeotropic refrigerant compositions containing carbon dioxide The present invention provides refrigerant blends which are replacements for chlorodifluoromethane(HCFC-22). The present blends have refrigeration characteristics which are similar to HCFC-22. The blends comprise from about 10 to about 90 weight percent o... | 04/07/1998 |
| 5728315 | Azeotrope-like compositions of trifluoromethane, carbon dioxide, ethane and hexafluoroethane Azeotrope-like compositions of trifluoromethane, carbon dioxide, ethane, and hexafluoroethane are provided. The compositions of the invention are environmentally desirable for use as refrigerants, aerosol propellants, blowing agents for polymer foam, heat... | 03/17/1998 |
| 5720797 | Process for recovering sulfur hexafluoride The present invention relates to a process for recovering sulfur hexafluoride ("SF6 "). More specifically, the invention provides a pressure swing adsorption--desorption process for recovering SF6 from a gas stream using zeolites, ac... | 02/24/1998 |
| 5705717 | Fluorination process using hydrogen fluoride-containing fluorinating agents Fluorination processes using hydrogen fluoride-containing fluorinating agents that are safely and easily handled, transported, and stored and that also exhibit good reactivity are provided. More particularly, the invention provides processes for producing... | 01/06/1998 |
| 5705716 | Hydrochlorofluorocarbons having OH rate constants which do not contribute substantially to ozone depletion and global warming The present invention provides hydrochlorofluorocarbons having 3 to 5 carbons atoms, 1 to 2 chlorine atoms, and an OH rate constant from about 8 to about 25 cm3 /molecule/sec×10-14. The hydrochlorofluorocarbons are useful as solvent... | 01/06/1998 |
| 5696307 | Hydrofluoroalkanes as cleaning and degreasing solvents Hydrofluoroalkanes useful as solvents, especially for vapor degreasing and solvent cleaning, are one or many of the following formulae: CHF2 --X--(CHF)n --X--Y wherein X is selected from the group consisting of CHF, CF2 and CH | 12/09/1997 |
| 5688833 | Azeotrope-like compositions of 1 1 1 3 3-pentafluoropropane and 1 1-dichloro-1-fluoroethane Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 1,1-dichloro-1-fluoroethane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams and as aerosol propellants.... | 11/18/1997 |
| 5677358 | Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and hydrocarbons Azeotrope-like compositions of 1, 1, 1, 3, 3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparatio... | 10/14/1997 |
| 5672294 | Azeotrope-like compositions of 1,1,1,3,3-pentaflurorpropane and hydrocarbons Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of... | 09/30/1997 |
| 5663474 | Alkylation process using hydrogen fluoride-containing alkylation catalysts This invention relates to catalysts for alkylation reactions and their preparation. More particularly, the invention relates to an alkylation process using a hydrogen fluoride-containing alkylation catalyst, which catalyst may be safely and easily handled... | 09/02/1997 |
| 5654465 | Process for the production of cyanocinnamamides This invention provides a process for producing cyanocinnamamides. More particularly, the invention provides a process for condensing an cyanoacetamide with a carbonyl-containing compound to produce cyanocinnamamides in good yield.... | 08/05/1997 |
| 5654473 | Intermediates for the synthesis of trifluoromethylated organic compounds Novel trifluoromethylated intermediates are provided which are useful in synthesizing trifluoromethylated organic compounds. Specifically, compounds of the formula CF3 CCl.dbd.CHCH2 X are provided, which compounds are versatile inter... | 08/05/1997 |
| 5632966 | Process for hydrogen fluoride separation The present invention provides a convenient method for separating hydrogen fluoride from a chemical mixture. More specifically, a method is provided in which hydrogen fluoride is separated from a chemical mixture containing at least one organic material b... | 05/27/1997 |
| 5569750 | RTV silicone compositions using aminohydrocarbyl-substituted ketoximinosilanes A room temperature vulcanizable silicone rubber composition with crack resistant properties with improvement during cure, comprising a silanol end-stopped diorganopolysiloxane polymer; a methyl tris-(methyl ethyl ketoximino)silane crosslinker, an aminohyd... | 10/29/1996 |
| 5569794 | Vapor phase process for producing hydroflourocarbons from perchloroethylene having a phenolic inhibitor An improved process for producing hydrofluorocarbons and hydrochlorofluorocarbons by reacting anhydrous hydrogen fluoride in the vapor phase and in the presence of a fluorination catalyst with an admixture of perchloroethylene and a phenolic inhibitor. Th... | 10/29/1996 |
| 5545775 | Liquid phase process for the preparation of 1,1-difluoroethane 1,1-difluoroethane is produced by the reaction of 1,2-dichloroethane with anhydrous hydrogen fluoride in a liquid phase and in the presence of a Lewis acid. Preferably the Lewis acid is tin, antimony, titanium, molybdenum, tungsten, niobium or tantalum ha... | 08/13/1996 |
| 5534176 | Refrigeration lubricants prepared by polymerizing alkene having a perfluoroalkyl group on one end thereof The present invention provides a composition for use in refrigeration and air-conditioning comprising: (a) at least one refrigerant selected from the group consisting of hydrofluorocarbon, hydrochlorofluorocarbon, fluorocarbon, and chlorofluorocarbon; and... | 07/09/1996 |
| 5534588 | Room temperature vulcanizable silicone compositions employing phenyl substituted tris-functional ketoxime silanes A room temperature vulcanizable silicone rubber composition with high elongation and low modulus comprising 10-90 percent by weight polydiorganosiloxane having terminal hydroxyl groups, 1-10 percent by weight phenyl tris-functional ketoximino-containing s... | 07/09/1996 |
| 5514766 | Di-, tri- and tetrafunctional methyl isobutyl and methyl amyl ketoxime-based silanes The invention relates to the following novel silanes: methyl vinyl bis-(methyl isobutyl ketoximino) silane; methyl vinyl bis-(methyl amyl ketoximino) silane; methyl tris-(methyl isobutyl ketoximino) silane; vinyl tris-(methyl isobutyl ketoximino) silane; ... | 05/07/1996 |
| 5456862 | Thermally stable forms of electrically conductive polyaniline This invention relates to compositions of thermally stable electrically conductive substituted and unsubstituted polyanilines and to conductive articles formed from such compositions.... | 10/10/1995 |
| 5454966 | Stabilized chlorine-containing refrigeration compositions The present invention provides a compositions for use in compression refrigeration and air-conditioning which substantially reduce the occurrence of the foregoing problem. The compositions comprise: (a) chlorine-containing refrigerant selected from the gr... | 10/03/1995 |
| 5422423 | Thermally stable electrically conductive conjugated polymer complexes having hydrogen bonding counterions This invention relates to thermally stable electrically conductive conjugated polymer complexes comprising a substituted or unsubstituted positively charged conjugated polymer doped with a dopant anion substituted with one or more anionic functionalities ... | 06/06/1995 |
