Patents by Inventor Ira Hessel

Ira Hessel 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).

  • Light filters using yellow melanin and melanin-like oligomers and photochromic dyes
    Patent number: 8133414
    Abstract: Selective fractionation and separation of melanin and use of fractionated or separated melanin in connection with light filters is disclosed. Further, light filters that use yellow melanin or melanin like materials prepared to have a yellow color and a melanin transmission spectrum in combination with a photochromic dye are disclosed. The yellow form of melanin has minimal impact on the perception of light intensity with transmission values greater than 80%. The combination allows for a single light filter suitable for both night driving and sunglass applications and which also preserve color perception.
    Type: Grant
    Filed: November 17, 2008
    Date of Patent: March 13, 2012
    Assignee: Photoprotective Technologies, Inc.
    Inventors: James M. Gallas, Ira Hessel
  • Light filters using yellow melanin and melanin-like oligomers and photochromic dyes
    Patent number: 8048343
    Abstract: Light filters that use yellow melanin or melanin like materials prepared to have a yellow color and a melanin transmission spectrum in combination with a photochromic dye are disclosed. The yellow form of melanin has minimal impact on the perception of light intensity with transmission values greater than 80%. The combination allows for a single light filter suitable for both night driving and sunglass applications and which also preserve color perception.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: November 1, 2011
    Assignee: Photoprotective Technologies
    Inventors: James M. Gallas, Ira Hessel
  • Light filters using yellow melanin and melanin-like oligomers and photochromic dyes
    Publication number: 20100123105
    Abstract: Selective fractionation and separation of melanin and use of fractionated or separated melanin in connection with light filters is disclosed. Further, light filters that use yellow melanin or melanin like materials prepared to have a yellow color and a melanin transmission spectrum in combination with a photochromic dye are disclosed. The yellow form of melanin has minimal impact on the perception of light intensity with transmission values greater than 80%. The combination allows for a single light filter suitable for both night driving and sunglass applications and which also preserve color perception.
    Type: Application
    Filed: November 17, 2008
    Publication date: May 20, 2010
    Inventors: James M. Gallas, Ira Hessel
  • Light filters using yellow melanin and melanin-like oligomers and photochromic dyes
    Publication number: 20060282066
    Abstract: Light filters that use yellow melanin or melanin like materials prepared to have a yellow color and a melanin transmission spectrum in combination with a photochromic dye are disclosed. The yellow form of melanin has minimal impact on the perception of light intensity with transmission values greater than 80%. The combination allows for a single light filter suitable for both night driving and sunglass applications and which also preserve color perception.
    Type: Application
    Filed: May 4, 2006
    Publication date: December 14, 2006
    Inventors: James Gallas, Ira Hessel