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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
HYDROMER INC	POST OFFICE BOX 337 WHITEHOUSE NJ 08888

International Classification(s)

• C08F:MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONL....
• C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

• 1989 Application Filing Year
• C08F Class
• 1026 Applications Filed
• 16 Patents Issued To-Date
• 1.56 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Creasy, Walter S	Bridgewater, NJ	9	664
# of filed Patents : 9 Total Citations : 664

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Patent Citation Ranking

• 10 Citation Count
• C08F Class

• 0 % this patent is cited more than
• 34 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 4987182

Hydrophilic polyvinybutyral alloys

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Abstract

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A hydrophilic polymer blend is disclosed which comprises a first polymer component which is an organic solvent-soluble, thermoplastic polyvinylbutyral (PVB) and a second polymer component which is a hydrophilic poly(N-Vinyl lactam), e.g., a water soluble polyvinylpyrrolidone. The blend demonstrates slipperiness in aqueous environments and, among other applications, is useful in low-friction coatings for a wide variety of substrates. A method for providing the coatings is also described.

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Description

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Claims

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Legal Events

 

• STCH2003
• FP2003
• LAPS2003
• REMI2002
• FPAY1998
• FPAY1994
• FEPP1993
• I1991
• F1989
• PD1988

Date	Code	Event	Description
Feb 19, 2003	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Jan 22, 2003	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Jan 22, 2003
Jan 22, 2003	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Aug 06, 2002	REMI	MAINTENANCE FEE REMINDER MAILED
Jun 26, 1998	FPAY	FEE PAYMENT	year of fee payment: 8
Jul 11, 1994	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 08, 1993	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY
Jan 22, 1991	I	Issuance
Feb 23, 1989	F	Filing
Apr 25, 1988	PD	Priority Date