Use of pyroglutamic acid esters as gas hydrate inhibitors with improved biodegradability

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8735332
SERIAL NO

12084805

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method for preventing the formation of gas hydrates in an aqueous phase by adding esters of pyroglutamic acid in the quantities of from 0.01 to 2% by weight. The esters of pyroglutamic acid produced by esterifying at least one alcohols, comprising from 1 to 100 hydroxyl groups with pyroglutamic acid and/or glutamic acid, wherein the alcohol has no more than one ester group or no more than one carboxylic acid group.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
CLARIANT PRODUKTE (DEUTSCHLAND) GMBHFRANKFURT GERMANY

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Feustel, Michael Koengernheim, DE 69 879
Leinweber, Dirk Kelkheim, DE 66 222

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 27, 2025
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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