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:
Jun. 17, 1997
Filed:
Mar. 28, 1995
Applicant:
Inventors:
Calvin K Johnson, Lockport, IL (US);
Kwok-tuen Tse, Berwyn, IL (US);
Assignee:
Borden Chemical, Inc., Springfield, OR (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08K / ;
U.S. Cl.
CPC ...
523208 ; 523205 ; 523130 ; 524541 ; 524594 ; 524611 ; 528155 ; 528219 ; 507220 ;
Abstract
Proppants comprising a particle coated with a composition comprising bisphenol-aldehyde novolak resin, a bisphenol homopolymer or mixtures including such polymers are disclosed. Foundry sands comprising a particle coated with a composition comprising bisphenol-aldehyde novolak resin, a bisphenol homopolymer or mixtures including such polymers are disclosed. Methods of making and using these proppant particles in subterranean formations or making and using these foundry sands in foundries are also disclosed.