Patent application number | Description | Published |
20090018233 | Crosslink Agents and Dual Radical Cure Polymer - A synthetic route to polymers comprised of at least two monomers each with a very different reactivity ratio by using a corresponding crosslink agent for each monomer. Novel crosslink agents are described that provide for the copolymerization of at least one hydrophilic monomer with at least one lens monomer typically used to prepare materials for ophthalmic lenses. The new crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer. | 01-15-2009 |
20090023876 | Crosslink Agents and Dual Radical Cure Polymer - Crosslink agents used to copolymerize at least one hydrophilic monomer with at least one lens monomer typically used to prepare polymeric materials for ophthalmic lenses. The crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer. Accordingly, the invention is also directed to a hydrophilic crosslinked polymer that comprises at least two monomeric units and at least two different crosslink units. The use of the dual crosslink system provides an improved means to control the final chemical, physical and structural characteristics of the resulting polymer. | 01-22-2009 |
20110105779 | CROSSLINK AGENTS - Novel crosslink agents are described that provide for the copolymerization of at least one hydrophilic monomer with at least one lens monomer typically used to prepare materials for ophthalmic lenses. The new crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer. | 05-05-2011 |
20110115110 | Method of Making Silicone Hydrogels with Fluorinated Side Chain Polysiloxanes - A method of making a silicone hydrogel contact lens from a monomer mixture that includes: N-vinyl-N-methyl acetamide, N-vinyl pyrrolidone or a mixture thereof; a monofunctional polysiloxanylalkyl monomer, and a polysiloxane-containing monomer having a perfluorinated side chain on a terminal carbon. The monomer mixture is charged to a mold and then subjected to spin casting or static casting. The casted mold is exposed to visible light or UV radiation. The resulting silicone hydrogel contact lens has an oxygen permeability of at least about 120 Barrers, a water content of at least about 20 weight percent, and a modulus from 40 g/mm | 05-19-2011 |
20120004380 | Crosslink Agents and Dual Radical Cure Polymer - Crosslink agents used to copolymerize at least one hydrophilic monomer with at least one lens monomer typically used to prepare polymeric materials for ophthalmic lenses. The crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer. Accordingly, the invention is also directed to a hydrophilic crosslinked polymer that comprises at least two monomeric units and at least two different crosslink units. The use of the dual crosslink system provides an improved means to control the final chemical, physical and structural characteristics of the resulting polymer. | 01-05-2012 |
Patent application number | Description | Published |
20080289485 | Rounds counter remotely located from gun - A rounds counter for a weapon mount is disclosed. The rounds counter is mounted on the mount in a remote location from the weapon itself, such as to a pedestal supporting a gimbal rotating the weapon mount in azimuth, inside an elevation drive housing, or to other structure. The mounting location is selected to be one where shock loads are relatively high, as compared to other locations on the mount. The rounds counter includes a sensor which senses shock due to the firing of the weapon, such as an accelerometer or strain gauge. The sensor could also be an acoustic transducer. Analog and digital circuitry for processing the sensor signal and to count the firing of the gun is also disclosed. The rounds counter is particularly useful as a common, single rounds counter unit for a weapon mount is adapted to receive and fire a variety of weapons, such as remotely operated weapon mounts mounted to military vehicles and patrol watercraft adapted to receive and fire four different types of guns. | 11-27-2008 |
20100011943 | Rounds counter remotely located from gun - A rounds counter for a weapon mount is disclosed. The rounds counter is mounted on the mount in a remote location from the weapon itself, such as to a pedestal supporting a gimbal rotating the weapon mount in azimuth, inside an elevation drive housing, or to other structure. The mounting location is selected to be one where shock loads are relatively high, as compared to other locations on the mount. The rounds counter includes a sensor which senses shock due to the firing of the weapon, such as an accelerometer or strain gauge. The sensor could also be an acoustic transducer. Analog and digital circuitry for processing the sensor signal and to count the firing of the gun is also disclosed. The rounds counter is particularly useful as a common, single rounds counter unit for a weapon mount is adapted to receive and fire a variety of weapons, such as remotely operated weapon mounts mounted to military vehicles and patrol watercraft adapted to receive and fire four different types of guns. | 01-21-2010 |