Patents by Inventor Bolton James R.

Bolton James R. 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).

  • Transparent, fixed tint glass lenses
    Patent number: 5366940
    Abstract: A transparent, fixed tint glass lens is provided having a thickness of between about 1.0 mm and about 1.8 mm and which is derived from an alkali silicate composition containing, in terms of weight percent on an oxide basis, at least 6.2% iron oxides, at least 0.03% cobalt oxide and at least 0.12% nickel oxide in the presence of an oxidizing agent such as arsenic oxide. Preferably, the lenses have a transmittance of not more than 1% of ultraviolet radiation at 380 nm.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: November 22, 1994
    Assignee: Bausch & Lomb Incorporated
    Inventors: Bolton James R., J. Raymond Hensler