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:
Feb. 14, 1989
Filed:
Feb. 12, 1987
Applicant:
Inventors:
Bernd Hillemeier, Wiesbaden, DE;
Gunter Brockmann, Bad Homburg, DE;
Richard Pohl, Morfelden-Walldorf, DE;
Assignee:
Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann, Essen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
4273977 ; 427426 ; 427427 ;
Abstract
A spray concrete composition which is sprayed with driving-air pressure has its setting time accelerated by incorporation in the driving air of amorphous silica dust having an inner surface (specific surface area) of at least 25 m.sup.2 /g.