Patents by Inventor Evelyn N. Drake
Evelyn N. Drake has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4979980Abstract: An encapsulated water soluble fertilizer which comprises a polymeric film of about 2 to about 100 micrometers coated on a surface of said fertilizer, said polymeric film comprising a sulfonated polymer having about 10 to about 200 meq of sulfonate group per 100 grams of said sulfonated polymer, said sulfonate groups being neutralized with a polycaprolactone polymer being characterized by the formula ##STR1## wherein R.sub.1 or R.sub.2 is an alkyl, cycloalkyl or aryl group; R.sub.3, R.sub.4 and R.sub.5 are a hydrogen or alkyl, cycloalkyl, or aryl groups; m equal 1 to 20 and n equals 1 to 500.Type: GrantFiled: December 11, 1987Date of Patent: December 25, 1990Assignee: Exxon Research & Engineering CompanyInventors: Warren A. Thaler, Pacifico V. Manalastas, Evelyn N. Drake, Robert D. Lundberg
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Patent number: 4970117Abstract: A composite comprising: a substrate; and a polymeric coating adhered to at least one surface of said substrate, said polymer coating having a thickness of about 1 to about 100 micrometers, wherein said polymer coating comprises a neutralized carboxylated polymer having a carboxylate content of about 5 to about 300 meq. per 100 grams of said neutralized carboxylated polymer.Type: GrantFiled: October 28, 1988Date of Patent: November 13, 1990Assignee: Exxon Research and Engineering CompanyInventors: Ilan Duvdevani, Pacifico V. Manalastas, Evelyn N. Drake
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Patent number: 4935301Abstract: The present invention relates a cement composite containing glass fibers encapsulated with a polymeric coating which is formed from an organic solution of an interpolymer complex of an anionic polymer and a cationic polymer.Type: GrantFiled: July 17, 1989Date of Patent: June 19, 1990Assignee: Exxon Research and Engineering CompnayInventors: Hans J. Rerup, Evelyn N. Drake, Ilan Duvdevani
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Patent number: 4923517Abstract: The present invention relates a cement composite containing glass fibers encapsulated with a polymeric coating which is formed from an organic solution of an interpolymer complex of an anionic polymer and a cationic polymer.Type: GrantFiled: December 16, 1988Date of Patent: May 8, 1990Assignee: Exxon Research and Engineering CompanyInventors: Hans J. Rerup, Evelyn N. Drake, Ilan Duvdevani
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Patent number: 4801498Abstract: A composite comprising: a substrate; and a polymeric coating adhered to at least one surface of said substrate, said polymer coating having a thickness of about 1 to about 100 micrometers, wherein said polymer coating comprises a neutralized carboxylated polymer having a carboxylate content of about 5 to about 300 meq. per 100 grams of said neutralized carboxylated polymer.Type: GrantFiled: October 27, 1986Date of Patent: January 31, 1989Assignee: Exxon Research and Engineering CompanyInventors: Ilan Duvdevani, Pacifico V. Manalastas, Evelyn N. Drake
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Patent number: 4788081Abstract: A polymeric composite comprising a (a) urea; (b) a coating of sulfonated polymer which has about 10 to about 200 meq. of sulfonate groups per 100 grams of said sulfonated polymer, said sulfonate groups being neutralized with a polycaprolactone polymer having the formula: ##STR1## wherein R.sub.1 or R.sub.2 is an alkyl, cycloalkyl or aryl group; R.sub.3, R.sub.4 and R.sub.5 are a hydrogen or alkyl, cycloalkyl, or aryl groups; m equals 1 to 20 and n equals 1 to 500, wherein said coating is deposited on the surface of said urea.Type: GrantFiled: February 1, 1988Date of Patent: November 29, 1988Assignee: Exxon Research and Engineering CompanyInventors: Warren A. Thaler, Pacifico V. Manalastas, Evelyn N. Drake, Robert D. Lundberg
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Patent number: 4741956Abstract: A polymeric composite comprising a (a) urea; (b) a coating of sulfonated polymer which has about 10 to about 200 meq. of sulfonate groups per 100 grams of said sulfonated polymer, said sulfonate groups being neutralized with a polycaprolactone polymer having the formula: ##STR1## wherein R.sub.1 or R.sub.2 is an alkyl, cycloalkyl or aryl group; R.sub.3, R.sub.4 and R.sub.5 are a hydrogen or alkyl, cycloalkyl, or aryl groups; m equals 1 to 20 and n equals 1 to 500, wherein said coating is deposited on the surface of said urea.Type: GrantFiled: July 9, 1986Date of Patent: May 3, 1988Assignee: Exxon Research and Engineering CompanyInventors: Warren A. Thaler, Pacifico V. Manalastas, Evelyn N. Drake, Robert D. Lundberg
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Patent number: 4701204Abstract: A composite comprising a substrate and an elastomeric coating adhered to at least one surface of said substrate, said elastomeric coating having a thickness of about 1 to about 100 micrometers, wherein said elastomeric coating comprises an interpolymeric complex of a neutralized sulfonated polymer and an amine containing polymer, said neutralized sulfonated polymer having a sulfonate content of about 4 to about 200 meq. per 100 grams of said neutralized sulfonated polymer and said amine containing polymer containing basic nitrogen atoms wherein the basic nitrogen content ranges from about 4 to about 500 meq. per 100 grams of polymer.Type: GrantFiled: December 12, 1985Date of Patent: October 20, 1987Assignee: Exxon Research and Engineering CompanyInventors: Ilan Duvdevani, Pacifico V. Manalastas, Evelyn N. Drake, Warren A. Thaler
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Patent number: 4683953Abstract: The dispersed aqueous phase of a shear thickening composition, useful as a well control fluid which comprises a water-in-oil emulsion having hydratable, water-expandable hydrophillic clay, dispersed in the continuous, surfactant-containing oily phase thereof, hydratable, water-expandable hydrophillic clay, is prepared by mixing an aqueous solution of a polyacrylamide with an aqueous solution of polyacrylic acid wherein the concentration of the polymer in each separate solution used to prepare said aqueous phase is less than about 2 wt %.Type: GrantFiled: March 14, 1985Date of Patent: August 4, 1987Assignee: Exxon Research and Engineering CompanyInventors: Daniel J. Eustace, Donald B. Siano, Evelyn N. Drake, Peter Calcavecchio
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Patent number: 4663366Abstract: A shear thickening composition which comprises a water-in-oil emulsion having dispersed in the continuous, oily phase thereof, hydratable, water-expandable hydrophillic clay, wherein said oily phase has a polyamine derivative surfactant dissolved therein and the dispersed aqueous phase comprises an aqueous solution of a polyacrylamide and polycarboxylic acid. These compositions are useful as well control fluids and may be used in deep wells.Type: GrantFiled: March 6, 1984Date of Patent: May 5, 1987Assignee: Exxon Research & Engineering CompanyInventors: Evelyn N. Drake, Peter Calcavecchio
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Patent number: 4542791Abstract: A process for plugging a porous formation in a well bore which comprises pumping a shear-thickening composition into drill pipe in the well under conditions of low shear to the point desired to be plugged at which point the composition is forced through the orifices of a drill bit at the end of the drill pipe and subjected to high shear of at least about 1,000 sec..sup.-1 which forms a paste in the well bore which plugs the porous formation. The shear-thickening composition comprises a water-in-oil emulsion having granular bentonite dispersed in the continuous oily phase, wherein the oily phase has a polyamine derivative surfactant dissolved therein, and the aqueous phase comprises an aqueous solution of a polyacrylamide and a polycarboxylic acid. This process may be used for plugging wells having depths in excess of 8,000 feet.Type: GrantFiled: November 16, 1984Date of Patent: September 24, 1985Assignee: Exxon Research & Engineering CompanyInventors: Evelyn N. Drake, Peter Calcavecchio
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Patent number: 4503170Abstract: The instant invention is directed to shear thickening fluids to prevent unwanted flow in wells penetrating subterranean formations. The shear thickening fluids comprise (1) a water swellable granular clay present in sufficient quantity so that, upon interaction with an aqueous phase, a stiff paste rapidly forms having a strength of at least 2000 lbs/100 ft.sup.2, (2) a nonaqueous phase comprising a hydrocarbon material and a surfactant, and (3) an aqueous phase comprising water and a watersoluble polymer. The granular clay and water-polymer solution are kept separated by the intervening hydrocarbon-surfactant composition, which is the continuous phase. The intervening oil phase prevents the interaction between the water-polymer phase and the granular clay and results in a stable, nonreacting, pumpable composite until such time as the granular clay is fragmented by application of a sufficiently high shear force.Type: GrantFiled: July 21, 1982Date of Patent: March 5, 1985Assignee: Exxon Production Research Co.Inventors: Evelyn N. Drake, Mary E. Morrison, Charles R. Dawson
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Patent number: 4475594Abstract: A process for plugging a porous area of well bore which comprises pumping a shear thickening composition into the well under conditions of low shear to the portion of the well bore desired to be plugged at which point subjected to high shear to form a paste which plugs or seals the porous area. The shear thickening composition comprises a water-in-oil emulsion having granular bentonite dispersed in the oily phase, said oily phase having both an oil soluble amine and a polyamine derivative surfactant dissolved therein. The aqueous phase will preferably comprises a polyacrylamide solution. This process may be used for plugging wells having depths in excess of 8,000 feet.Type: GrantFiled: June 28, 1982Date of Patent: October 9, 1984Assignee: Exxon Research & Engineering Co.Inventors: Evelyn N. Drake, Peter Calcavecchio
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Patent number: 4445576Abstract: A spacer comprising the water-in-oil emulsion portion of a shear-thickening well control fluid is used to separate drilling mud from the shear-thickening fluid in the drill pipe in the well bore to avoid premature thickening of the shear thickening fluid in the drill pipe. The shear-thickening well control fluid comprises a water-in-oil emulsion in which is dispersed granular particles of hydratable, water expandable clay.Type: GrantFiled: May 24, 1982Date of Patent: May 1, 1984Assignees: Exxon Research and Engineering Co., Exxon Production Research CompanyInventors: Evelyn N. Drake, Yuh-hwang Tsao
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Patent number: 4442241Abstract: A shear thickening composition which comprises a water-in-oil emulsion having dispersed in the continuous, oily phase thereof, hydratable, water-expandable hydrophillic clay, said oily phase having dissolved therein a polyamine derivative surfactant and an oil-soluble amine. The aqueous phase will preferably have dissolved therein a polymer, preferably a polyacrylamide, which will flocculate and congeal the clay when same is mixed with water. These compositions are useful as well control fluids and may be used in deep wells.Type: GrantFiled: June 28, 1982Date of Patent: April 10, 1984Assignee: Exxon Research and Engineering Co.Inventors: Evelyn N. Drake, Peter Calcavecchio