U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Oil-in-water emulsion

Patent 6127319 Issued on October 3, 2000. Estimated Expiration Date: Icon_subject October 29, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1824221

2224135

2713029

2974134

3065170

Additive for reducing gel strength in aqueous drilling fluids
Patent #: 3998742
Issued on: 12/21/1976
Inventor: Walker

Heteropolysaccharide biopolymer
Patent #: 4233438
Issued on: 11/11/1980
Inventor: Myers ,   et al.

Microbial heteropolysaccharide
Patent #: 4329448
Issued on: 05/11/1982
Inventor: Cox ,   et al.

Drilling fluid with browning reaction anionic carbohydrate
Patent #: 5106517
Issued on: 04/21/1992
Inventor: Sheu, et al.

Well drilling and servicing fluids and methods of increasing the low shear rate viscosity thereof
Patent #: 5804535
Issued on: 09/08/1998
Inventor: Dobson, et al.

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Inventor

Assignee

Application

No. 429803 filed on 10/29/1999

US Classes:

507/110, Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, xanthan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons507/140, Contains inorganic component other than water or clay507/209, Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons507/211, Carbohydrate is polysaccharide507/269, Contains inorganic component other than water or clay516/72The agent contains organic compound containing oxygen

Examiners

Primary: Tucker, Philip

Attorney, Agent or Firm

International Classes

C09K 007/02
C09K 003/00

Abstract

Disclosed are oil-in-water emulsions containing an aqueous continuous phase, an emulsified oleaginous liquid, and an oligosaccharide mixture composed of sugar units selected from the group consisting of arabinose, mannose, galactose, glucose, xylose, and mixtures thereof, and which consists primarily of pentosans, hexosans, and mixtures thereof, containing from one to ten sugar units. The emulsions preferably also contain an alkaline earth metal oxide or hydroxide, preferably lime. The emulsions may also contain aphrons.

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