Patents by Inventor David Castillejos

David Castillejos 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).

  • Patent number: 8691874
    Abstract: Methods for treating disorders of the eye and/or disorders of a nerve in a human or veterinary patient by delivering to the patient a therapeutically effective amount of a compound selected from the group of; urea, urea derivatives, thiourea, thiourea derivatives, guanidine, guanidine derivatives and compounds having General Formula I as set forth herein. For ophthalmic applications, the compound may be delivered by intravitreal injection such that the compound causes vitreal liquefaction, posterior vitreoretinal detachment and other affects.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 8, 2014
    Assignee: Kato Pharmaceuticals, Inc.
    Inventors: Vicken H. Karageozian, David Castillejos, John Park
  • Patent number: 8267995
    Abstract: An intra scleral implant and method of implantation for use in the treatment of intraocular pressure and presbyopia. The implant features a body portion and protrusions from the body portion to anchor the device in a cavity formed in the scleral wall of the eye. Optionally a drug delivery function is provided to allow long term communication of drugs to tissue surrounding the implant.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: September 18, 2012
    Inventor: David Castillejos
  • Publication number: 20120196937
    Abstract: Methods for treating disorders of the eye and/or disorders of a nerve in a human or veterinary patient by delivering to the patient a therapeutically effective amount of a compound selected from the group of; urea, urea derivatives, thiourea, thiourea derivatives, guanidine, guanidine derivatives and compounds having General Formula I as set forth herein. For ophthalmic applications, the compound may be delivered by intravitreal injection such that the compound causes vitreal liquefaction, posterior vitreoretinal detachment and other affects.
    Type: Application
    Filed: April 12, 2012
    Publication date: August 2, 2012
    Applicant: KATO PHARMACEUTICALS, INC.
    Inventors: Vicken H. Karageozian, David Castillejos, John Park
  • Patent number: 8157759
    Abstract: An implantable drain for the anterior chamber of the eye for venting fluid therefrom to relieve pressure. The device features a serpentine draining conduit having an aggregate length much longer than a liner conduit. The conduit is engaged within the sclera in a pocket formed under a scleral flap. The conduits may be interchanged with a shunt or other component communicating into the anterior chamber.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: April 17, 2012
    Assignee: Ocumatrix, Inc.
    Inventor: David Castillejos
  • Patent number: 7981096
    Abstract: An method and a device for implant into the eye of a patient configured in size to frictionally engage within a cup-like depression naturally occurring in the optic nerve of the eye. The implant has a reservoir for calculated disbursement of medicine to tissue surrounding it and in one mode is refillable and in another mode is formed of biodegradable material which is absorbed by the patient after use ceases.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: July 19, 2011
    Inventor: David Castillejos
  • Patent number: 7977385
    Abstract: Methods and preparations for treating disorders of the eye and/or causing dissolution of corneal proteoglycans and organized healing of corneal stroma, softening of the cornea for non-surgical refractive correction of eyesight, removing corneal haze and opacification, inhibiting fibroblasts and preventing corneal fibrosis and scar formation, treating pterigiums and treating corneal neovascularization as well as iris neovascularization. Preparations containing a) urea, b) urea derivatives (e.g., hydroxyurea, thiourea), c) antimetabolites, e) urea, urea derivatives, non-enzymatic proteins, nucleosides, nucleotides and their derivatives (e.g.
    Type: Grant
    Filed: March 14, 2003
    Date of Patent: July 12, 2011
    Assignee: Numoda Biotechnologies, Inc.
    Inventors: Vicken H. Karageozian, David Castillejos, John Park, Gabriel Arthuro Carpio Aragon, Jose Luis Gutierres Floress
  • Publication number: 20090287136
    Abstract: An implantable drain for the anterior chamber of the eye for venting fluid therefrom to relieve pressure. The device features a serpentine draining conduit having an aggregate length much longer than a liner conduit. The conduit is engaged within the sclera in a pocket formed under a scleral flap. The conduits may be interchanged with a shunt or other component communicating into the anterior chamber.
    Type: Application
    Filed: May 18, 2009
    Publication date: November 19, 2009
    Inventor: David Castillejos
  • Publication number: 20070265599
    Abstract: An method and a device for implant into the eye of a patient configured in size to frictionally engage within a cup-like depression naturally occurring in the optic nerve of the eye. The implant has a reservoir for calculated disbursement of medicine to tissue surrounding it and in one mode is refillable and in another mode is formed of biodegradable material which is absorbed by the patient after use ceases.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 15, 2007
    Inventor: David Castillejos
  • Publication number: 20070219632
    Abstract: An apparatus and method for treating presbyopia and lowering intraocular pressure employing an intra-scleral implant into an elongated cavity oriented in the radial direction of the eye. The implant has a planar portion with a longitudinal axis running therethrough and a pair of extension portions extending a distance away from said planar portion and said longitudinal axis. The implant is implanted in an incision in four quadrants of the sclera. The incisions are shaped similar to the implants. The projecting extensions into side projections of the incisions, provide an anchor to maintain the implant in the sclera.
    Type: Application
    Filed: May 11, 2007
    Publication date: September 20, 2007
    Inventor: David Castillejos
  • Publication number: 20070105950
    Abstract: Methods for treating disorders of the eye and/or disorders of a nerve in a human or veterinary patient by delivering to the patient a therapeutically effective amount of a compound selected from the group of; urea, urea derivatives, thiourea, thiourea derivatives, guanidine, guanidine derivatives and compounds having General Formula I as set forth herein. For ophthalmic applications, the compound may be delivered by intravitreal injection such that the compound causes vitreal liquefaction, posterior vitreoretinal detachment and other affects.
    Type: Application
    Filed: October 23, 2006
    Publication date: May 10, 2007
    Applicant: Vitreo-Retinal Technologies, Inc.
    Inventors: Vicken Karageozian, David Castillejos, John Park
  • Publication number: 20070027537
    Abstract: An apparatus and method for treating presbyopia and lowering intraocular pressure employing an intra-scleral implant into an elongated cavity oriented in the radial direction of the eye. The implant has a planar portion with a longitudinal axis running therethrough and a pair of extension portions extending a distance away from said planar portion and said longitudinal axis. The implant is implanted in an incision in four quadrants of the sclera. The incisions are shaped similar to the implants. The projecting extensions into side projections of the incisions, provide an anchor to maintain the implant in the sclera.
    Type: Application
    Filed: September 27, 2006
    Publication date: February 1, 2007
    Inventor: David Castillejos
  • Patent number: 7008960
    Abstract: Methods and preparatons for treating disorders of the eye and/or causing posterior vitreous disconnection or disinsertion. Preparations containing a) urea, b) urea derivatives (e.g., hydroxyurea, thiourea), c) a non-steroidal anti-inflamatory agents, d) antmetabolites, e) urea, urea derivatives, non-enzymatic proteins, nucleosides, nucleotides and their derivatives (e.g., adenine, adenosine, cytosine, cytadine, guanine, guanitadine, guanidinium, thymidine, thimitadine, uradine, uracil, cystine), uric acid, calcium acetal salicylate, ammonium sulfate or other compound capable of causing non-enzymatic dissolution of the hyaloid membrane or e) any of the possible combinations thereof, are administered to the eye in therapeutically effective amounts.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: March 7, 2006
    Assignee: Vitreo-Retinal Technologies, Inc.
    Inventor: David Castillejos
  • Publication number: 20050137124
    Abstract: Methods and preparations for treating disorders of the eye and/or causing posterior vitreous disconnection or disinsertion. Preparations containing a) urea, b) urea derivatives (e.g., hydroxyurea, thiourea), c) a non-steroidal anti-inflamatory agents, d) antmetabolites, e) urea, urea derivatives, non-enzymatic proteins, nucleosides, nucleotides and their derivatives (e.g., adenine, adenosine, cytosine, cytadine, guanine, guanitadine, guanidinium, thymidine, thimitadine, uradine, uracil, cystine), uric acid, calcium acetal salicylate, ammonium sulfate or other compound capable of causing non-enzymatic dissolution of the hyaloid membrane or e) any of the possible combinations thereof, are administered to the eye in therapeutically effective amounts.
    Type: Application
    Filed: February 17, 2005
    Publication date: June 23, 2005
    Inventor: David Castillejos
  • Publication number: 20040043082
    Abstract: Methods and preparations for treating disorders of the eye and/or causing dissolution of corneal proteoglycans and organized healing of corneal stroma, softening of the cornea for non-surgical refractive correction of eyesight, removing corneal haze and opacification, inhibiting fibroblasts and preventing corneal fibrosis and scar formation, treating pterigiums and treating corneal neovascularization as well as iris neovascularization. Preparations containing a) urea, b) urea derivatives (e.g., hydroxyurea, thiourea), c) antimetabolites, e) urea, urea derivatives, non-enzymatic proteins, nucleosides, nucleotides and their derivatives (e.g.
    Type: Application
    Filed: March 14, 2003
    Publication date: March 4, 2004
    Applicant: Vitreo-Retinal Technologies, Inc.
    Inventors: Vicken H. Karageozian, David Castillejos, John Park, Gabriel Arthuro Carpio Aragon, Jose Luis Gutierres Floress
  • Publication number: 20040024453
    Abstract: An intra scleral implant and method of implantation for use in the treatment of intraocular pressure and presbyopia. The implant features a body portion and protrusions from the body portion to anchor the device in a cavity formed in the scleral wall of the eye. Optionally a drug delivery function is provided to allow long term communication of drugs to tissue surrounding the implant.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 5, 2004
    Applicant: GLAUCOMA RESEARCH TECHNOLOGIES, INC.
    Inventor: David Castillejos
  • Publication number: 20030199574
    Abstract: Methods for treating disorders of the eye and/or disorders of a nerve in a human or veterinary patient by delivering to the patient a therapeutically effective amount of a compound selected from the group of; urea, urea derivatives, thiourea, thiourea derivatives, guanidine, guanidine derivatives and compounds having General Formula I as set forth herein. For ophthalmic applications, the compound may be delivered by intravitreal injection such that the compound causes vitreal liquefaction, posterior vitreoretinal detachment and other affects.
    Type: Application
    Filed: February 13, 2003
    Publication date: October 23, 2003
    Applicant: Vitreo-Retinal Technologies, Inc.
    Inventors: Vicken H. Karageozian, David Castillejos, John Park
  • Patent number: 6462071
    Abstract: Methods and preparations for treating disorders of the eye and/or causing posterior vitreous disconnection or disinsertion. Preparations containing a) urea, b) urea derivatives (e.g., hydroxyurea, thiourea), c) a non-steroidal anti-inflamatory agents, d) antmetabolites, e) urea, urea derivatives, non-enzymatic proteins, nucleosides, nucleotides and their derivatives (e.g., adenine, adenosine, cytosine, cytadine, guanine, guanitadine, guanidinium, thymidine, thimitadine, uradine, uracil, cystine), uric acid, calcium acetal salicylate, ammonium sulfate or other compound capable of causing non-enzymatic dissolution of the hyaloid membrane or e) any of the possible combinations thereof, are administered to the eye in therapeutically effective amounts.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: October 8, 2002
    Assignee: Vitreo-Retinal Technologies, Inc.
    Inventor: David Castillejos