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:
Nov. 21, 2000
Filed:
Jul. 22, 1998
Applicant:
Inventors:
Herbert B Scher, Moraga, CA (US);
Jin Ling Chen, El Cerrito, CA (US);
Assignee:
Zeneca Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; A01N / ;
U.S. Cl.
CPC ...
264-41 ; 424408 ; 424417 ; 424421 ; 424489 ; 424490 ; 424501 ;
Abstract
Microcapsules containing a biologically active material which is sensitive to ultraviolet light are prepared which contain an ultraviolet light protectant selected from titanium dioxide, zinc oxide and mixtures thereof, suspended and thoroughly dispersed in a liquid.