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. 01, 1990
Filed:
May. 04, 1989
Applicant:
Inventor:
Thomas Roche, Cheshire, CT (US);
Assignee:
Olin Corporation, Cheshire, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ;
U.S. Cl.
CPC ...
156653 ; 156657 ; 156662 ; 252 791 ; 252 793 ; 134-2 ;
Abstract
An aqueous etchant solution made from water, hydrogen fluoride and a polyammonium fluoride salt selected from the group consisting of ethylenediammonium difluoride and diethylenetriammonium trifluoride.
Roche, Thomas. (1990). Etchant solutions containing hydrogen fluoride and a polyammonium (U.S. Patent No. 4921572). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4921572
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile