1
William Alexander: Composition and method of controlling lost circulation from wellbores. American Colloid Company, Mason Kolehmainen Rathburn & Wyss, June 6, 1989: US04836940 (158 worldwide citation)

A method and composition for controlling the lost circulation of drilling mud in a wellbore during a drilling operation comprising the introduction of a pelletized composition, comprising a water-insoluble, water-absorbent polymer and bentonite, in a weight ratio of water-absorbent polymer to benton ...


2
Robert V Colangelo: Article for sealing well castings in the earth. American Colloid Company, Marshall O Toole Gerstein Murray & Bicknell, April 24, 1990: US04919989 (125 worldwide citation)

An article for sealing boreholes in the earth and particularly around well casings extending into boreholes in the earth comprises the placement of a plurality of discrete, liquid-absorbing annular sealing elements or disks formed of relatively dry, solid, particulate or granular liquid-swellable cl ...


3
Craig R Kehnemuyi, John Hughes: Method and apparatus for reporting customer data. American Colloid Company, Marshall O Toole Gerstein Murray & Bicknell, December 4, 1990: US04975841 (124 worldwide citation)

Method and an apparatus are provided for automatically contacting customers and reporting customer order status data. A memory is provided for receiving and storing the customer order status information. The customer order status data includes product order information, scheduled and actual shipping ...


4
Robert V Colangelo: Method for sealing well casings in the earth. American Colloid Company, Marshall O Toole Gerstein Murray & Bicknell, June 26, 1990: US04936386 (86 worldwide citation)

A method for sealing boreholes in the earth and particularly around well casings extending into boreholes in the earth comprises the placement of a plurality of discrete, liquid-absorbing annular sealing elements or disks formed of relatively dry, solid, particulate or granular liquid-swellable clay ...


5
William Alexander, Mark Anderson, Barbara R Regan: Surface treated absorbent polymers. American Colloid Company, Mason Kolehmainen Rathburn & Wyss, April 25, 1989: US04824901 (75 worldwide citation)

Surface treating water-absorbent resins with a polyquaternary amine substantially increases both the rate of water absorption and the quantity of water absorbed and retained by the resin. In addition to improved water absorbing properties, the surface-treated resins maintain the necessary "dry feel" ...


6
William Alexander, Mark Anderson, Barbara R Regan: Process for preparing water-absorbing resins. American Colloid Company, Marshall O Toole Gerstein Murray & Bicknell, January 15, 1991: US04985518 (69 worldwide citation)

A method of preparing a solid water absorbing resin including mixing a monomer solution of (A) acrylic acid neutralized 70-100 mole percent; and (B) a water-miscible to water-soluble polyvinyl monomer in a combined concentration of at least 30 wt. %; with water to form a mixed monomer solution, and ...


7
Hisao Takeda, Yasunori Taniguchi: Production process for highly water absorbable polymer. American Colloid Company, Mason Kolehmainen Rathburn & Wyss, June 25, 1985: US04525527 (56 worldwide citation)

Disclosed is a process for preparing water absorbing, cross-linked acrylate resins by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia, and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30 ...


8
Alec W White: Water barrier of water-swellable clay or other abrasive material sandwiched between interconnected layers of flexible fabric sewn or needled together using a lubricant and/or a liquid adhesive. American Colloid Company, Marshall O Toole Gerstein Murray & Borun, September 13, 1994: US05346566 (52 worldwide citation)

A multi-layer article of manufacture includes an intermediate layer of a water-swellable colloidal clay, such as bentonite, sandwiched between two layers of flexible sheet or fabric material wherein the two flexible layers of sheet or fabric material are structurally interconnected through the inter ...


9
Alec W White: Water barrier formed from a clay-fiber mat. American Colloid Company, Marshall O Toole Gerstein Murray & Borun, August 24, 1993: US05237945 (46 worldwide citation)

A method of manufacturing a water barrier fabric, in flexible or rigid form, and article manufactured thereby, formed by dispersing a water-absorbent material, in powdered or granular form, among a mass of fibers during the formation of a loose mat of said fibers, to homogeneously disperse the powde ...


10
William Alexander: Method of impregnating a water-penetrable article with a swell-inhibited water swellable clay slurry. American Colloid Company, Mason Kolehmainen Rathburn & Wyss, September 23, 1986: US04613542 (46 worldwide citation)

A method of impregnating a water-penetrable article with a clay slurry includes temporarily inhibiting the swellability of the clay to unexpectedly increase the clay content and decrease the viscosity of the slurry to achieve a higher clay content in a clay-impregnated, water-penetrable article. The ...