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. 20, 2001
Filed:
Jan. 27, 1999
Applicant:
Inventors:
Thomas Nosker, Stockton, NJ (US);
Richard Renfree, Scotch Plains, NJ (US);
James Kerstein, Watchung, NJ (US);
Assignee:
Polywood Inc., Edison, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L 2/300 ; C08L 2/502 ; E01B 3/44 ; E01B 3/46 ; E01B 3/120 ;
U.S. Cl.
CPC ...
C08L 2/300 ; C08L 2/502 ; E01B 3/44 ; E01B 3/46 ; E01B 3/120 ;
Abstract
A method of maintaining proper distance between railroad rails is disclosed. The method utilizes railroad ties manufactured from a composite of polystyrene and polyolefin components, preferably obtained from recycled plastics. The composite exhibits a dual phase morphology wherein the two phases, polystyrene and polyolefin, intertwine and remain continuous throughout the material.