Patents by Inventor Agustin Alberto deRojas

Agustin Alberto deRojas 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).

  • Lens with photochromic elastomer film and method of making it
    Patent number: 6773108
    Abstract: A photochromic lens consists of a lens coated with an elastomeric film having a photochromic dye dispersed therein. The elastomeric provides abrasion resistance and some impact resistance to the lens. The photochromic lens is characterized by lower spectral transmission when activated, and shorter activation and deactivation times than previously known photochromic lenses. A method for making the photochromic lens consists of dissolving one or more photochromic dyes in an elastomeric pre-polymer solution, immersing the lens in the solution so that the lens becomes coated with the prepolymer solution, and treating the lens, for example, by heating, to cause said prepolymer to form an elastomeric film on the lens. Preferably, the pre-polymer solution is a polyurethane pre-polymer.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: August 10, 2004
    Assignee: Invicta Corporation
    Inventors: Agustin Alberto deRojas, Pallapalayam Muthusamy Thangamathesvaran
  • Lens with photochromic elastomer film and method of making it
    Publication number: 20020136899
    Abstract: A photochromic lens consists of a lens coated with an elastomeric film having a photochromic dye dispersed therein. The elastomeric provides abrasion resistance and some impact resistance to the lens. The photochromic lens is characterized by lower spectral transmission when activated, and shorter activation and deactivation times than previously known photochromic lenses. A method for making the photochromic lens consists of dissolving one or more photochromic dyes in an elastomeric pre-polymer solution, immersing the lens in the solution so that the lens becomes coated with the prepolymer solution, and treating the lens, for example, by heating, to cause said prepolymer to form an elastomeric film on the lens. Preferably, the pre-polymer solution is a polyurethane pre-polymer.
    Type: Application
    Filed: March 21, 2001
    Publication date: September 26, 2002
    Inventors: Agustin Alberto deROJAS, Pallapalayam Muthusamy Thangamathesvaran