Granted Patent
Utility
US 6,592,718
· Confirmation No. 8262
METHOD OF IMPROVING RETENTION AND DRAINAGE IN A PAPERMAKING PROCESS USING A DIALLYL-N,N-DISUBSTITUTED AMMONIUM HALIDE/ACRYLAMIDE COPOLYMER AND A STRUCTURALLY MODIFIED CATIONIC POLYMER
Patented Case
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Inventors
Jane B. Wong Shing
Aurora, IL
Ross T. Gray
Plainfield, IL
Andrei S. Zelenev
Oak Park, IL
Jiwei Chen
Singapore, SINGAPORE
Attorneys & Agents of Record
Classification
USPC
162/164.1
Prosecution
- Examiner
- HALPERN, MARK
- Art Unit
- 1731
- Docket No.
- 7630
- Confirmation No.
- 8262
Patent Term Adjustment
0days
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2017-02-28
SECURITY AGREEMENT
Recorded 2009-05-18
from
NALCO COMPANY
GRANT OF SECURITY INTEREST
Recorded 2003-12-08
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded 2001-12-17
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Quick Facts
- Patent No.
- US 6,592,718
- App. No.
- 09/947,675
- Filed
- 2001-09-06
- Granted
- 2003-07-15
- Examiner
- HALPERN, MARK
- Art Unit
- 1731
- PTA
- 0 days
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