The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 21, 1995
Filed:
Jun. 02, 1994
Applicant:
Inventors:
Anthony R Knoerzer, Fairport, NY (US);
Leland W Reid, Palmyra, NY (US);
Edwin M Wheeler, LaGrange, GA (US);
Assignee:
Mobil Oil Corp., Fairfax, VA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ; C08L / ;
U.S. Cl.
CPC ...
524497 ; 525 98 ; 525240 ;
Abstract
A transparent polymeric film that provides a barrier to the transmission of ultra-violet light. The film results from the addition of titanium dioxide particles having an average particle size less than the wavelength of visible light, yet greater than the wavelength of ultra-violet light, to a polymeric material capable of being formed as a transparent film. More specifically, the titanium dioxide particles have an average size on the order of from about 0.010 .mu.m to 0.050 .mu.m and, preferably from about 0.018 .mu.m to 0.040 .mu.m.