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

Patent Owner(s)

Patent Owner	Address
COGNIS DEUTSCHLAND GMBH & CO KG	HENKELSTRASSE 67 DUESSELDORF 40589

International Classification(s)

• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

• 1992 Application Filing Year
• C07C Class
• 1958 Applications Filed
• 736 Patents Issued To-Date
• 37.59 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Daute, Peter	Essen, DE	64	456
# of filed Patents : 64 Total Citations : 456
Gruetzmacher, Roland	Wuelfrath, DE	20	383
# of filed Patents : 20 Total Citations : 383
Hoefer, Rainer	Duesseldorf, DE	58	490
# of filed Patents : 58 Total Citations : 490
Kluth, Hermann	Duesseldorf, DE	23	474
# of filed Patents : 23 Total Citations : 474
Stoll, Gerhard	Korschenbroich, DE	32	864
# of filed Patents : 32 Total Citations : 864

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Patent Citation Ranking

• 26 Citation Count
• C07C Class

• 94.20 % this patent is cited more than
• 32 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: 5266714

Process for the production of reaction mixtures containing ester polyols

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Abstract

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Process for the preparation of ester polyols by conducting the ring opening of epoxidized esters and/or alcohols with carboxylic acids by the controlled addition of the epoxidized compounds to the carboxylic acids wherein the carboxylic acids are present in at least stoichiometric quantities based on epoxide groups, to minimize unreacted epoxide groups and produce ester polyols having relatively low viscosities compared to those produced by the one-pot prior art process.

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Description

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Claims

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Legal Events

 

• AS2005
• FPAY2005
• AS2003
• FPAY2001
• FPAY1997
• FEPP1996
• I1993
• STCF1993
• F1992
• AS1992
• PD1989

Date	Code	Event	Description
Dec 31, 2005	AS	ASSIGNMENT	free format text: PATENT AND TRADEMARK TRANSFER AGREEMENT;ASSIGNOR:COGNIS DEUTSCHLAND GMBH & CO. KG;REEL/FRAME:021817/0373 Owner name: COGNIS IP MANAGEMENT GMBH, GERMANY Effective Date: Dec 31, 2005
Apr 26, 2005	FPAY	FEE PAYMENT	year of fee payment: 12
Oct 01, 2003	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN;REEL/FRAME:014083/0112 Owner name: COGNIS DEUTSCHLAND GMBH & CO. KG, GERMANY Effective Date: Oct 01, 2003
May 03, 2001	FPAY	FEE PAYMENT	year of fee payment: 8
May 16, 1997	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 05, 1996	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Nov 30, 1993	I	Issuance
Sep 23, 1993	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
Apr 21, 1992	F	Filing
Apr 10, 1992	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:STOLL, GERHARD;DAUTE, PETER;HOEFER, RAINER;AND OTHERS;REEL/FRAME:006229/0358 Owner name: HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN (HENKEL KG Effective Date: Apr 10, 1992
Oct 21, 1989	PD	Priority Date