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:
Mar. 23, 1976
Filed:
Apr. 01, 1974
Applicant:
Inventors:
Chi Fang Tung, Mahtomedi Village, MN (US);
James A Laird, St. Joseph Township, St. Croix County, WI (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; B32B / ; C03C / ;
U.S. Cl.
CPC ...
428325 ; 106 / ; 106 52 ;
Abstract
Transparent glass microspheres that are based on a ternary system of TiO.sub.2, heavy-metal oxide selected from BaO and CdO, and strong glass-forming oxide selected from SiO.sub.2, P.sub.2 O.sub.5, and GeO.sub.2 are disclosed. The microspheres have improved uniformity in optical properties and in handling properties, whereby retroreflective products of greater retroreflectivity can be made.
Tung, Chi. (1976). Transparent glass microspheres and products made therefrom (U.S. Patent No. 3946130). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3946130
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile