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:
Sep. 02, 1980
Filed:
Aug. 31, 1978
Applicant:
Inventors:
Ralph Mitchell, Lexington, MA (US);
Thomas D Sleeter, Arcadia, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B27K / ;
U.S. Cl.
CPC ...
428541 ; 106 1505 ; 427331 ; 427369 ; 427440 ; 428537 ; 428907 ;
Abstract
Wood is impregnated with a solution of tannic acid followed by impregnation with a solution of a metal in the form of a salt. The metal selected is one that will complex with both the impregnated tannic acid and the wood.