Patents by Inventor Sanjay Rastogi

Sanjay Rastogi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120255430
    Abstract: A ballistic-resistant article includes a stack of sheets containing reinforcing linear tension members, the direction of the linear tension members within the stack being no unidirectionally, wherein some of the linear tension members are linear tension members comprising high molecular weight polyethylene and some of the linear tension members comprise aramid. A sheet and a consolidated sheet package contain the ballistic-resistant article, and a method of manufacturing produces the ballistic-resistant article.
    Type: Application
    Filed: December 23, 2010
    Publication date: October 11, 2012
    Applicant: TEIJIN ARAMID B.V.
    Inventors: Soon Joo Bovenschen, Joris Van Der Eem, Sanjay Rastogi, Jules Armand Wilhelmina Harings, Adriaan Anton Schaap
  • Patent number: 8262952
    Abstract: A mold assembly for the manufacture of at least one ophthalmic device used in or on the eye is disclosed. The mold assembly includes a mateable pair of mold parts wherein at least one of the mold parts comprises at least an oxygen-absorbing mold material and an oxygen scavenger composition containing (i) an oxygen scavenging polymer comprising a polymer backbone and one or more substituted or unsubstituted cyclic olefinic groups covalently linked to the polymer backbone; and (ii) an oxygen scavenging catalytic amount of a transition metal catalyst.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: September 11, 2012
    Assignee: Bausch & Lomb Incorporated
    Inventors: Bruce E. Lawton, Stephen P. Johnston, Edward A. Vaquero, Sanjay Rastogi
  • Patent number: 8221659
    Abstract: An apparatus for releasing a molded lens from a deformable mold includes a shear ring for temporarily retaining an annular portion of the deformable mold outside a periphery of the lens and a plunger for deforming an annular section of the deformable mold within the periphery of the lens. The apparatus can be employed to release a non-hydrated hydrogel lens from a deformable mold section.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: July 17, 2012
    Assignee: Bausch & Lomb Incorporated
    Inventors: Kevin Beebe, William J. Seyboth, Raymond Walker, Sanjay Rastogi, Mahendra P. Nandu, James Vermeire, Wen Jin
  • Publication number: 20120095168
    Abstract: A method for controlling the physical state of an ultra-high molecular weight polymer to make the ultra-high molecular weight polymer suitable for further processing, and related polymers compositions methods and systems, wherein the method comprises combining a catalyst, monomers, and an additive, for a time and under condition to allow synthesis of a nascent polymer and co-crystallization of the nascent polymer with the additive.
    Type: Application
    Filed: October 18, 2011
    Publication date: April 19, 2012
    Inventors: Julia A. KORNFIELD, Artemis AILIANOU, Sara RONCA, Sanjay RASTOGI, Giuseppe FORTE
  • Publication number: 20120001353
    Abstract: An apparatus for releasing a molded lens from a deformable mold includes a shear ring for temporarily retaining an annular portion of the deformable mold outside a periphery of the lens and a plunger for deforming an annular section of the deformable mold within the periphery of the lens. The apparatus can be employed to release a non-hydrated hydrogel lens from a deformable mold section.
    Type: Application
    Filed: September 13, 2011
    Publication date: January 5, 2012
    Inventors: Kevin Beebe, William J. Seyboth, Raymond Walker, Sanjay Rastogi, Mahendra P. Nandu, James Vermeire, Wen Jin
  • Publication number: 20110268952
    Abstract: An UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500 000 gram/mole, and a Mw/Mn ratio of at most 6, and a film width of at least 5 mm. The film may be manufactured via a process which comprises subjecting a starting UHMWPE with a weight average molecular weight of at least 500 000 gram/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 1.4 MPa, and a Mw/Mn ratio of at most 6 to a compacting step and a stretching step under such conditions that at no point during the processing of the polymer its temperature is raised to a value above its melting point. The film may be used as starting material in any applications where high tensile strength and high energy to break are important. Suitable applications include ballistic applications, ropes, cables, nets, fabrics, and protective applications.
    Type: Application
    Filed: January 6, 2010
    Publication date: November 3, 2011
    Applicant: TEIJIN ARAMID B.V.
    Inventors: Joris Eem Van Der, Anton Peter De Weijer, Sanjay Rastogi
  • Publication number: 20110268962
    Abstract: Ultra-high molecular weight polyethylene including 0.001 to 10 weight % of refractory particles, wherein the refractory particles have an average particle size (D50) below 300 nm. The average particle size is at least 5 nm, in particular at least 10 nm, and/or at most 150 nm, in particular at most 100 nm, more in particular at most 80 nm. The particles are of transformation toughened zirconia.
    Type: Application
    Filed: January 6, 2010
    Publication date: November 3, 2011
    Applicant: TEIJIN ARAMID B.V.
    Inventors: Sanjay Rastogi, Sara Ronca
  • Publication number: 20110268951
    Abstract: The present invention pertains to a polyethylene film and a process for manufacturing such film. The polyethylene film may have a ratio between the strength in a first direction in the film plane and the strength in a second direction in the film plane perpendicular to the first direction in the range of 0.1-10:1, the strength in at least one direction being at least 0.2 Gpa. The process for manufacturing a polyethylene film may have a starting UHMWPE polymer with an average molecular weight of at least 500,000 grams/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 1.4 MPa, and a Mw/Mn ratio of at most 6 to a solvent-free compacting process and a stretching process under such conditions that at no point during the process the temperature of the intermediate polymer film is raised to a value above its melting point.
    Type: Application
    Filed: January 6, 2010
    Publication date: November 3, 2011
    Applicant: TEIJIN ARAMID B.V.
    Inventors: Joris Eem Van Der, Johannes Bos, Anton Peter De Weijer, Sanjay Rastogi, Gerwin Elderman
  • Patent number: 8038912
    Abstract: An apparatus for releasing a molded lens from a deformable mold includes a shear ring for temporarily retaining an annular portion of the deformable mold outside a periphery of the lens and a plunger for deforming an annular section of the deformable mold within the periphery of the lens. The apparatus can be employed to release a non-hydrated hydrogel lens from a deformable mold section.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: October 18, 2011
    Assignee: Bausch & Lomb Incorporated
    Inventors: Kevin Beebe, William J. Seyboth, Raymond Walker, Sanjay Rastogi, Mahendra P. Nandu, James Vermeire, Wen Jin
  • Publication number: 20110046303
    Abstract: The invention relates to a novel process for making compositions comprising a polyamid, water and a salt, having reduced crystallinity, wherein the process comprising the steps of: a. mixing the polyamide, water and a salt b. heating the mixture to a temperature above 100° C. in a range between 120° C. below the Brill temperature and 50° C. above the Brill temperature of the polyamide at a pressure above the vapour pressure of the mixture at said temperature c. optionally cooling down the mixture.
    Type: Application
    Filed: March 13, 2009
    Publication date: February 24, 2011
    Inventors: Jules Harings, Yogesh Sheshrao Deshmukh, Esther Vinken, Sanjay Rastogi
  • Patent number: 7799258
    Abstract: The invention relates to a process for the manufacture of a shaped part of ultra high molecular weight polyethylene (UHMW-PE) comprising melt processing, wherein UHMW-PE a) is annealed at a temperature between 130° C. and 136° C., preferably at about 135° C. for at least one hour, b) is converted into a shaped part at a temperature above 142° C.; and c) is cooled down to a temperature below 135° C. The invention further relates to a part like a fiber made with the process and the use of the fiber in a bio medical application.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: September 21, 2010
    Assignee: DSM IP Assets B.V.
    Inventors: Sanjay Rastogi, Lada Kurelec
  • Publication number: 20100144224
    Abstract: The present invention pertains to a UHMWPE film having a tensile strength of at least 2.0 GPa, a tensile energy to break of at least 30 J/g, an Mw of at least 500 000 gram/mole, and a Mw/Mn ratio of at most 6. The film may be manufactured via a process which comprises subjecting a starting UHMWPE with a weight average molecular weight of at least 500 000 gram/mole, an elastic shear modulus determined directly after melting at 160° C. of at most 0.9 MPa, and a Mw/Mn ratio of at most 6 to a compacting step and a stretching step under such conditions that at no point during the processing of the polymer its temperature is raised to a value above its melting point. The film may be used as starting material in any applications where high tensile strength and high energy to break are important. Suitable applications include ballistic applications, ropes, cables, nets, fabrics, and protective applications.
    Type: Application
    Filed: July 2, 2008
    Publication date: June 10, 2010
    Applicant: TEIJIN ARAMID B.V.
    Inventors: Anton Peter De Weijer, Hendrik Van De Hee, Martinus Wilhelmis Maria Gemma Peters, Sanjay Rastogi, Bing Wang
  • Publication number: 20090302488
    Abstract: An apparatus for releasing a molded lens from a deformable mold includes a shear ring for temporarily retaining an annular portion of the deformable mold outside a periphery of the lens and a plunger for deforming an annular section of the deformable mold within the periphery of the lens. The apparatus can be employed to release a non-hydrated hydrogel lens from a deformable mold section.
    Type: Application
    Filed: August 14, 2009
    Publication date: December 10, 2009
    Inventors: Kevin Beebe, William J. Seyboth, Raymond Walker, Sanjay Rastogi, Mahendra P. Nandu, James Vermeire, Wen Jin
  • Patent number: 7527099
    Abstract: A system is provided for sealing a space in a wellbore formed in an earth formation. The system has a swelleable body arranged in the wellbore in a manner so as to seal the space upon swelling of the swelleable body, the swelleable body being susceptible of being in contact with formation water flowing into the wellbore, the swelleable body including a matrix material provided with a compound soluble in the formation water. The matrix material substantially prevents or restricts migration of the compound out of the swelleable body and allows migration of the formation water into the swelleable body by osmosis so as to induce swelling of the swelleable body upon migration of the formation water into the swelleable body.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: May 5, 2009
    Assignee: Shell Oil Company
    Inventors: Martin Gerard Rene Bosma, Erik Kerst Cornelissen, Juul Cuijpers, Francesco Picchioni, Sanjay Rastogi
  • Publication number: 20090108478
    Abstract: A mold assembly for the manufacture of at least one ophthalmic device used in or on the eye is disclosed. The mold assembly includes a mateable pair of mold parts wherein at least one of the mold parts comprises at least an oxygen-absorbing mold material and an oxygen scavenger composition containing (i) an oxygen scavenging polymer comprising a polymer backbone and one or more substituted or unsubstituted cyclic olefinic groups covalently linked to the polymer backbone; and (ii) an oxygen scavenging catalytic amount of a transition metal catalyst.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Applicant: Bausch & Lomb Incorporated
    Inventors: Bruce E. Lawton, Stephen P. Johnston, Edward A. Vaquero, Sanjay Rastogi
  • Patent number: 7250197
    Abstract: Intraocular lenses or contact lenses 20 are placed on a lower spindle 34 and held there by a vacuum in conduit 34. Noble and reactive gases 56, 58 are introduced and a voltage is applied across upper spindle 32 and lower spindle 34 to plasma treat one surface of the lens. The lens is transferred to the other spindle and the process is repeated.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: July 31, 2007
    Assignee: Bausch & Lomb Incorporated
    Inventors: Sanjay Rastogi, Michael J. Moorehead, William J. Appleton, George L. Grobe, III, Paul Trotto
  • Publication number: 20070138670
    Abstract: An apparatus for releasing a molded lens from a deformable mold includes a shear ring for temporarily retaining an annular portion of the deformable mold outside a periphery of the lens and a plunger for deforming an annular section of the deformable mold within the periphery of the lens. The apparatus can be employed to release a non-hydrated hydrogel lens from a deformable mold section.
    Type: Application
    Filed: December 20, 2005
    Publication date: June 21, 2007
    Applicant: BAUSCH AND LOMB INCORPORATED
    Inventors: Kevin Beebe, William Seyboth, Raymond Walker, Sanjay Rastogi, Mahendra Nandu, James Vermeire, Wen Jin
  • Publication number: 20070132125
    Abstract: The present invention is a process for extracting pre-polymer from a polymer lens. The process comprises the step of contacting the lens with a super-cooled solvent for a period of time to increase the modulus of the contact lens. Thereafter the contact lens undergoes additional dry processing steps. By way of example, the dry processing steps include but are not limited to surface treatment, lens coating and polishing and/or edging of the contact lens.
    Type: Application
    Filed: November 13, 2006
    Publication date: June 14, 2007
    Inventors: Sanjay Rastogi, Gary Friends, Mahendra Nandu
  • Publication number: 20070132119
    Abstract: The present invention includes without limitation a process for separating a hydrogel contact lens from at least one mold half selected from the group comprising the anterior half and the posterior half of a contact lens. The process comprising the step of contacting either the contact lens or the one half with a maximum of about 1000 ?l of a super-cooled fluid to create a temperature differential between the contact lens and the one half.
    Type: Application
    Filed: November 13, 2006
    Publication date: June 14, 2007
    Inventors: Sanjay Rastogi, Gary Friends, Mahendra Nandu
  • Publication number: 20070132118
    Abstract: An apparatus for locating and retaining a plurality of device-in-mold assemblies within a supercritical fluid chamber, wherein at least one of residual extraction or release occurs within the chamber. The apparatus can include a plurality of trays for receiving the plurality of device-in-mold assemblies, the trays being sufficiently spaced for non interfering transition of the device-in-mold assemblies from a molded state to a released state.
    Type: Application
    Filed: December 9, 2005
    Publication date: June 14, 2007
    Applicant: BAUSCH AND LOMB INCORPORATED
    Inventors: Wen Jin, Larry Hovey, Sandeep Pandit, Sanjay Rastogi