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:
May. 22, 1990
Filed:
May. 23, 1988
Alan G Cowie, Stockton on Tees, GB;
Tioxide Group PLC, London, GB;
Abstract
There is an increasing demand for products which are effective in the absorbancy of UV light but still remain transparent to visible light. Titanium dioxide has been proposed for this use. A new form of titanium dioxide has been developed which is very effective in use and which is acicular in shape and having a ratio of the largest dimension to the shortest within the range 8:1 to 2:1 and wherein the largest dimension is from 0.01 to 0.15 micron and in which the particles have a coating of a hydrous oxide of aluminium and of silicon in a weight ratio of at least 1.5 and not greater than 4.5 expressed as the oxides. The materials are eminently suitable for use in cosmetics and other skin care products.