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:
Nov. 20, 1984
Filed:
Sep. 30, 1982
Applicant:
Inventor:
Harold L Heller, Narberth, PA (US);
Assignee:
The Franklin Institute, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
137-7 ; 134-2 ; 134-4 ; 134 42 ; 210924 ; 210925 ;
Abstract
Chemicals spilled on porous surfaces may be removed therefrom by applying to the spill site a poultice in the form of a slurry or paste of finely divided particulate material dispersed in a volatile solvent in which the spilled chemical substance is soluble, allowing the solvent to be absorbed into the porous substrate. The poultice is then allowed to dry, thereby effecting a wicking action causing extraction of the chemical substance from the substrate into the poultice.