Patents by Inventor William T. Tapp
William T. Tapp 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: 5826652Abstract: A packer is disclosed having a setting piston mounted on the body thereof. The packer is hydraulically set prior to treating or cementing. The packer has a sliding sleeve valve which is open during run-in. After the packer has set, the setting tool is released from the valve. The valve may then be operated through manipulation of the tubing string. The tubing string can be disengaged and reengaged into the packer body to determine if the valve has closed by measuring the pressure conditions at the surface.Type: GrantFiled: April 8, 1997Date of Patent: October 27, 1998Assignee: Baker Hughes IncorporatedInventor: William T. Tapp
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Patent number: 5594070Abstract: Polyolefin resin compositions and oriented microporous films prepared from same comprising an ethylene-propylene block copolymer having an ethylene content of about 10 to about 50 wt %, a propylene homopolymer or random propylene copolymer having up to about 10 wt % of a comonomer of ethylene or an .alpha.-olefin of 4 to 8 carbon atoms, and components selected from a low molecular weight polypropylene, a beta-spherulite nucleating agent and an inorganic filler, and to processes for forming such films wherein the microporous films have improved breathability, strength, toughness and break elongation.Type: GrantFiled: June 7, 1995Date of Patent: January 14, 1997Assignee: Amoco CorporationInventors: Philip Jacoby, Charles W. Bauer, Scott R. Clingman, William T. Tapp
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Patent number: 5317035Abstract: Polyolefin resin compositions and oriented microporous films prepared from same comprising an ethylene-propylene block copolymer having an ethylene content of about 10 to about 50 wt %, a propylene homopolymer or random propylene copolymer having up to about 10 wt % of a comonomer of ethylene or an .alpha.-olefin of 4 to 8 carbon atoms, a low molecular weight polypropylene, a beta-spherulite nucleating agent and an inorganic filler. The microporous films have improved breathability, strength, toughness and break elongation.Type: GrantFiled: December 18, 1992Date of Patent: May 31, 1994Assignee: Amoco CorporationInventors: Philip Jacoby, Charles W. Bauer, Scott R. Clingman, William T. Tapp
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Patent number: 5236963Abstract: This invention relates to polymeric compositions capable of being converted into oriented microporous films having microvoid cells, interconnecting pores between the cells, and improved elongation, softness and tear strength, comprising an ethylene-propylene block copolymer having an ethylene content of about 10 to about 50 wt %, a low flexural modulus propylene-based polymer, a propylene homopolymer or copolymer having up to about 10 wt % of a comonomer of ethylene or an .alpha.-olefin of 4 to 8 carbon atoms, an inorganic filler such as calcium carbonate, a beta-spherulite nucleating agent, and optionally, a low molecular weight polypropylene and to microporous films formed from such compositions.Type: GrantFiled: December 30, 1992Date of Patent: August 17, 1993Assignee: Amoco CorporationInventors: Philip Jacoby, William T. Tapp
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Patent number: 5187005Abstract: Self-bonded nonwoven web and woven fabic composites comprising at least one layer of a uniform basis weight self-bonded, fibrous nonwoven web comprising substantially randomly disposed, substantially continuous thermoplastic filaments adhered to at least one layer comprising woven thermoplastic yarns in the form of woven fabrics such as wall covering fabric, softside luggage fabric and leno weave fabric.Type: GrantFiled: December 10, 1991Date of Patent: February 16, 1993Assignee: Amoco CorporationInventors: Arno W. Stahle, Larry M. Bailey, William T. Tapp
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Patent number: 5169712Abstract: A porous film composite comprising at least one layer of an oriented polymeric porous film comprising an ethylene-propylene block copolymer having an ethylene content of about 10 to about 50 wt %, a polypropylene homopolymer or random copolymer of propylene having up to about 10 wt % of a comonomer of ethylene or an .alpha.-olefin of 4 to 8 carbon atoms, and at least one component selected from a low molecular weight polypropylene, a beta-spherulite nucleating agent and calcium carbonate adhered to at least one layer of a polymeric foam product, a woven fabric, or a nonwoven fabric such as a carded web of staple fibers, a spunbond fabric, meltblown fabric and a self-bonded, fibrous, nonwoven web.Type: GrantFiled: August 23, 1991Date of Patent: December 8, 1992Assignee: Amoco CorporationInventor: William T. Tapp
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Patent number: 5073436Abstract: A multi-layer composite of nonwoven fabrics comprising at least one layer of a self-bonded, fibrous, web nonwoven bonded to at least one layer of a microfibrous, nonwoven web having water repellency and water vapor permeability properties particularly suitable for protective apparel applications.Type: GrantFiled: July 20, 1990Date of Patent: December 17, 1991Assignee: Amoco CorporationInventors: Paul N. Antonacci, Geraldine M. Eaton, Delores R. Morris, William T. Tapp
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Patent number: 4967844Abstract: A system for installing and removing a production packer and ball valve apparatus in a well casing. The packer apparatus and valve apparatus are transported into a casing with an on/off overshot connected to a string of tubing. The packer is set by tubing manipulation independent of operation of the valve and the on/off connector and is resettable and can be disabled by a straight upward pull on the tubing string. The valve apparatus is selectively operable by rotary manipulation of the tubing string through the disengageable overshot and utilizes rotary motion to rotate a ball valve element between open and closed positions of the ball valve. In one form of the invention, the overshot is rotatably disengageable from the ball valve while the ball valve is operated by rotation of the string of pipe. The ball valve apparatus is capable of withstanding pressure in opposite directions.Type: GrantFiled: April 28, 1989Date of Patent: November 6, 1990Assignee: Elder Oil ToolsInventors: Robert T. Brooks, William T. Tapp
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Patent number: 4576230Abstract: A retrievable subsurface well casing slip and packer apparatus and method having upper and lower interconnected and expandable slips which have a combined circumferential engagement of a well conduit greater than or equal to 360.degree. and a control means for releasing engaging means for engagement with a well bore and permitting rotation of a running string in clockwise and counterclockwise directions without releasing the engagement means for setting the apparatus in a well bore.Type: GrantFiled: May 6, 1985Date of Patent: March 18, 1986Inventors: William T. Tapp, Ranson R. Fullinwider
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Patent number: 4565247Abstract: A retrievable subsurface well conduit engaging apparatus having releasable engaging means which are movable outwardly to engage a well conduit and which may be released by up and down movement of an operating means. Locking means maintains the well conduit engaging means in engagement with the well conduit until the operating means is moved upwardly which releases a coupling means from the locking means and allows disengagement of the apparatus.Type: GrantFiled: February 3, 1984Date of Patent: January 21, 1986Assignee: Elder, Inc.Inventors: William T. Tapp, William M. Roberts