| Patent Number |
Title Of Patent |
Date Issued |
| D372557 |
Combination razor body and shaving cream dispenser |
August 6, 1996 |
|
| 6656885 |
Anhydride-modified chitosan, method of preparation thereof, and fluids containing same |
December 2, 2003 |
| The invention provides an organic diacid anhydride-modified chitosan containing a polar additive comprising water soluble compounds containing one or more hydroxyl groups or one or more amino groups, including compounds containing both hydroxyl and amine groups, having a molecular we |
| 6358889 |
Viscosified aqueous chitosan-containing well drilling and servicing fluids |
March 19, 2002 |
| The invention provides well drilling and servicing fluids comprising an alkaline aqueous liquid containing chitosan, an anhydride, and an aldehyde therein. The invention further provides a method of drilling a well wherein there is circulated in the wellbore during drilling a drilling |
| 6291404 |
Viscosified aqueous chitosan-containing well drilling and servicing fluids |
September 18, 2001 |
| The invention provides aqueous viscous or gelled alkaline fluids particularly useful in oil and gas well operations, and a method of drilling a well therewith. The fluids contain chitosan, an amine reactive acid, and an aldehyde therein, whereby the amine reactive acid and the aldehy |
| 6277792 |
Viscosified aqueous fluids and viscosifier therefor |
August 21, 2001 |
| The present invention discloses a method of producing modified, derivatized chitosans which produce viscous aqueous liquids when dispersed (solublized) in compatible aqueous liquids. The method comprises reacting chitosan in an acidic solution with an aldehyde-group containing chemical |
| 6258755 |
Chitosan-containing well drilling and servicing fluids |
July 10, 2001 |
| Disclosed are a process for the preparation of pseudoplastic, shear thinning chitosan-containing fluids, and a method of enhancing the thermal stability of such fluids. Pseudoplastic fluids useful oil and/or gas wells, particularly drilling fluids, drill-in fluids, workover fluids, c |
| 5977030 |
Method of increasing the LSRV of aqueous fluids and oil-in-water emulsions prepared thereby |
November 2, 1999 |
| Disclosed are oil-in-water emulsions containing an aqueous polysaccharide-containing 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 mix |
| 5916849 |
Polysaccharide-containing well drilling and servicing fluids |
June 29, 1999 |
| Disclosed is a method of increasing the thermal stability or decreasing the fluid loss of aqueous polysaccharide-containing fluids which comprises incorporating into the fluids an oligosaccharide mixture composed of arabinose, mannose, galactose, glucose, and xylose sugar units, the |
| 5701674 |
Shaving cream dispensing razor |
December 30, 1997 |
| A razor body for use with a canister which contains aerosol shaving cream. The razor body may is also combined with the canister such that the razor body and canister form a razor system. The canister includes a body with a head formed on a distal head thereof and a neck formed between t |
| 5230305 |
Scoopable cat litter and method |
July 27, 1993 |
| An improvement in the use of clumping, scoopable litter to sorb and remove the urine deposited in litter receptacles by utilizing as the litter a natural product which has been modified to render it cohesive when wetted with urine. The modified natural product has excellent cohesion, is |
| 5207830 |
Lightweight particulate cementitious materials and process for producing same |
May 4, 1993 |
| Disclosed is a process of manufacturing a lightweight particulate cementitious composition particularly adapted to the sorption of liquids comprising adding to a foamed cement slurry a particle forming agent, and aging the treated foamed slurry for a period of time sufficient for the |
| 5188064 |
Clumping cat litter |
February 23, 1993 |
| The invention provides a method of increasing the sorption capacity of smectite clays which exhibit osmotic swelling such as montmorillonite clays having predominately sodium as the exchangeable cation. The invention further provides a clumping cat litter having excellent cohesivenes |
| 5147852 |
Reduction of seepage losses in well working compositions |
September 15, 1992 |
| The invention provides well working compositions containing a particulate additive to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions. The additive comprises: (1) a cellulosic material selected from the group consisting of oat hulls, |
| 5076944 |
Seepage loss reducing additive for well working compositions and uses thereof |
December 31, 1991 |
| The invention provides well working fluid compositions containing cotton burrs ground to certain particle size ranges to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions. Also provided is a seepage loss additive comprising the ground cott |
| 5071575 |
Well working compositions, method of decreasing the seepage loss from such compositions, and add |
December 10, 1991 |
| The invention provides well working fluid compositions containing oat hulls ground to certain particle size ranges to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions. Also provided is a seepage loss additive comprising the ground oat hul |
| 5004553 |
Well working compositions, method of decreasing the seepage loss from such compositions, and add |
April 2, 1991 |
| The invention provides well working fluid compositions containing oat hulls ground to certain particle size ranges to decrease the seepage loss of the fluid to fluid permeable formations contacted by the compositions. Also provided is a seepage loss additive comprising the ground oat hul |
| 4960740 |
Organophilic clay compositions |
October 2, 1990 |
| Organophilic clays which are effective fluid loss control additives for oil base well-working fluids are prepared from a swelling smectite clay and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most preferably commercial lecithin suc |
| 4925616 |
Method of protecting a cased pipeline from corrosion |
May 15, 1990 |
| Tall oil pitch is used as casing fillers in the interstitial spaced between a pipeline and a surrounding casing pipe. The tall oil pitch can be used per se or can be modified by: increasing its specific gravity above 1.0; increasing its pour point or dropping point; increasing its viscos |
| 4843048 |
Organophilic clay compositions |
June 27, 1989 |
| Organophilic clays which are effective fluid loss control additives for oil base well-working fluids are prepared from a swelling smectite clay and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most preferably commercial lecithin suc |
| 4597878 |
Polyphenolic acid adducts |
July 1, 1986 |
| The invention provides novel humic acid derivatives obtained by reacting humic acid-containing materials with a noval amide mixture comprising a polyamide and an amido-amine containing one free amino group per molecule. The novel amide mixture is obtained by reacting under amidation cond |
| 4569799 |
Process for making organophilic humate derivatives |
February 11, 1986 |
| The invention provides a novel process of preparing organophilic humate derivatives wherein: an aqueous solution of a humic acid-containing material is prepared with an alkali metal or ammonium base; an amine containing at least 16 carbon atoms and at least one functional group per m |
| 4507210 |
Method of determining the optimum aqueous composition for preventing _the swelling and dispersio |
March 26, 1985 |
| Disclosed is a process of formulating an aqueous medium to minimize the swelling and dispersion of subterranean formations contacted by the aqueous medium, particularly the aqueous phase of a water base drilling fluid. The process comprises: measuring a filtration property of a series |
| 4464274 |
Organophilic clay suspending agents |
August 7, 1984 |
| The invention provides methods of preparing organophilic clay suspending agents having enhanced dispersibility in oleaginous liquids, the organophilic clay containing suspending agents, and methods of increasing the viscosity of oleaginous liquids utilizing these suspending agents. The |
| 4435564 |
Compositions and processes for using hydroxyethyl cellulose in heavy brines |
March 6, 1984 |
| Processes are disclosed for activating hydroxyethyl cellulose (HEC) such that the HEC will disperse and hydrate in compatible heavy brines having a density greater than about 13.5 pounds per gallon containing one or more salts selected from the group consisting of calcium chloride, calci |
| 4435309 |
Method of liquifying waxy materials |
March 6, 1984 |
| The invention discloses a method of liquifying materials which are either waxy solids at ambient temperatures or solid or semi-solid mixtures of such waxy materials and a solvent therefor. Specifically, the invention discloses a method of preparing a liquid suspension of a waxy material |
| 4435217 |
Concentrated hydrophilic polymer suspensions |
March 6, 1984 |
| The thermal aging stability of liquid suspensions of hydrophilic, water-soluble polymers in an organic liquid is improved by adding to the suspension a liquid fatty acid. Superior liquid polymer compositions having improved resistance to settling (syneresis), thermal aging characteri |
| 4425244 |
Organophilic clay gellants |
January 10, 1984 |
| The invention provides methods of preparing organophilic clays having enhanced dispersibility in organic liquids, the organophilic clay containing gellants, and methods of increasing the viscosity of organic liquids utilizing these gellants. |
| 4382868 |
Organophilic clay gellants |
May 10, 1983 |
| The invention provides methods of preparing organophilic clays having enhanced dispersibility in organic liquids, the organophilic clay containing gellants, and methods of increasing the viscosity of organic liquids utilizing these gellants. |
