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:
Oct. 27, 1992
Filed:
Dec. 26, 1989
Applicant:
Inventor:
W Roy Burke, Tonawanda, NY (US);
Assignee:
National Gypsum Company, Dallas, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428703 ; 428220 ; 428332 ; 428913 ; 210170 ; 210724 ; 210749 ; 252175 ; 106782 ; 106787 ; 106791 ; 106800 ;
Abstract
Blocks, weighing about 35 lbs., formed of a homogeneous mixture of about 75% gypsum and 25% lime, are strategically placed in surface water that is being damaged by acid rain, where, by timed release of lime, the pH of the water is maintained at about 6.5 pH.
Burke, W. (1992). Acid rain neutralizing block, method of making such blocks and method of (U.S. Patent No. 5158835). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5158835
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile