Patents by Inventor John Pickett
John Pickett 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: 5872070Abstract: The present invention provides for amorphous, nanoporous, ceramic material having a surface area in excess of 70 m.sup.2 /gm and characterized by a high content of open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.03 cm.sup.3 /gm of the ceramic. The invention also provides a process for the preparation of such nanoporous ceramics wherein a ceramic precursor polymer or oligomer is gradually heated in the presence of an inert gas or vacuum up to a maximum temperature in the range of greater than 400.degree. C. up to about 650.degree. C. Optionally, the process may also include a crosslinking step conducted prior to the heating step wherein the precursor polymer or oligomer is heated in the presence of a crosslinking agent capable of undergoing addition or substitution reactions with backbone atoms present in said precursor material, at an intermediate temperature of about 100.Type: GrantFiled: January 3, 1997Date of Patent: February 16, 1999Assignee: Exxon Research and Engineering CompanyInventors: John Pickett Dismukes, Jack Wayne Johnson, James L. Pizzulli
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Patent number: 5806560Abstract: An improved fuel transfer pump is provided for relatively high flow transfer of fuel from one aircraft to another during an inflight refueling procedure, wherein the fuel transfer pump includes a jet-type scavenge pump for evacuating residual fuel from a fuel line or manifold. The scavenge pump comprises a venturi element connected along a recirculation conduit through which a small fuel flow is diverted from the high pressure discharge side of the fuel transfer pump for return to the fuel tank. The recirculation fuel flow induces a vacuum in a suction throat of the venturi element, and this vacuum is coupled by a suction line to evacuate residual fuel from the fuel line or manifold to the fuel tank. A flow baffle is mounted along the recirculation conduit downstream from the venturi element to ensure flooding and priming of the scavenge pump.Type: GrantFiled: October 22, 1996Date of Patent: September 15, 1998Assignee: J. C. Carter Company, Inc.Inventors: Albert W. Brown, John Pickett, Dino C. Scanderbeg
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Patent number: 5696217Abstract: The present invention provides for microporous ceramic materials having a surface area in excess of 100 m.sup.2 /gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.05 cm.sup.3 /gm of the ceramic. The pyrolysis product of ceramic precursor oligomers or polymers having a number average molecular weight in the range of from about 200 to about 100,000 g/mole in an ammonia atmosphere at temperatures of up to less than about 1200.degree. C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the ceramic precursor under controlled conditions of heating and with intermediate hold times, up to temperatures of less than 1200.degree. C., preferably less than 1000.degree. C., to form a microporous ceramic product.Type: GrantFiled: February 10, 1995Date of Patent: December 9, 1997Assignee: Exxon Research & Engineering CompanyInventors: John Pickett Dismukes, John Stewart Bradley, Jack Wayne Johnson, Edward William Corcoran, Jr.
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Patent number: 5643987Abstract: The present invention provides for microporous ceramic materials having a surface area in excess of 70 m.sup.2 /gm and an open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.03 cm.sup.3 /gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and finely divided silicon carbide or silicon nitride, whose pyrolysis product in inert atmosphere or in an ammonia atmosphere at temperatures of up to less than about 1100.degree. C. gives rise to the microporous ceramics of the invention. Also provided is a process for the preparation of the microporous ceramics of the invention involving pyrolysis of the ceramic intermediate under controlled conditions of heating up to temperatures of less than 1100.degree. C. to form a microporous ceramic product.Type: GrantFiled: May 24, 1994Date of Patent: July 1, 1997Assignee: Exxon Research and Engineering CompanyInventors: John Pickett Dismukes, Jack Wayne Johnson, Edward William Corcoran, Jr., Joseph Vallone, James J. Pizzulli, Jr., Michael P. Anderson
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Patent number: 4908388Abstract: Derivatives of carbonyl-group containing behavior modifying compounds, in which said carbonyl group has been converted to a photolabile group which regenerates the carbonyl group on exposure to radiation, are of value in various methods for the control of animal, and in particular insect, species.Type: GrantFiled: January 20, 1988Date of Patent: March 13, 1990Assignee: National Research Development CorporationInventors: John A. Pickett, Ewen D. M. Macaulay
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Patent number: 4844892Abstract: Compounds of formula ##STR1## in which R represents hydrogen, formyl or an alkanoyl group of two to twenty-five carbon atoms and R' represents an alkyl group of one to thirty-five carbon atoms are of value as mosquito attractants, mosquitoes being attracted to a location where they and/or their eggs or larvae are then destroyed.Type: GrantFiled: October 14, 1988Date of Patent: July 4, 1989Assignee: National Research Development CorporationInventors: Brian R. Laurence, John A. Pickett
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Patent number: 4803289Abstract: Compounds of formula ##STR1## in which R represents hydrogen, formyl or an alkanoyl group of two to twenty-five carbon atoms and R' represents an alkyl group of one to thirty-five carbon atoms are of value as mosquito attractants, mosquitoes being attracted to a location where they and/or their eggs or larvae are then destroyed.Type: GrantFiled: June 8, 1983Date of Patent: February 7, 1989Assignee: National Research Development Corp.Inventors: Brian R. Laurence, John A. Pickett
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Patent number: 4780479Abstract: Derivatives of carbonyl-group containing behavior modifying compounds, in which said carbonyl group has been converted to a photolabile group which regenerates the carbonyl group on exposure to radiation, are of value in various methods for the control of animal, and in particular insect, species.Type: GrantFiled: January 14, 1987Date of Patent: October 25, 1988Assignee: National Research Development CorporationInventors: John A. Pickett, Ewen D. M. Macaulay
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Patent number: 4657926Abstract: Derivatives of carbonyl-group containing behavior modifying compounds, in which said carbonyl group has been converted to a photolabile group which regenerates the carbonyl group on exposure to radiation, are of value in various methods for the control of animal, and in particular insect, species.Type: GrantFiled: May 14, 1984Date of Patent: April 14, 1987Assignee: National Research Development CorporationInventors: John A. Pickett, Ewen D. M. Macaulay
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Patent number: 4546110Abstract: Compounds which are .beta.-farnesene derivatives obtainable as a Diels-Adler adduct of .beta.-farnesene and a dienophile or by a modification of such an adduct in a manner as defined herein are of value in pest control, particularly in the control of aphids.Type: GrantFiled: January 20, 1983Date of Patent: October 8, 1985Assignee: National Research Development CorporationInventors: Glenn W. Dawson, David C. Griffiths, John A. Pickett
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Patent number: 4298626Abstract: A method of providing a high quality iso-.alpha.-acid preparation is described. The method involves extracting a high quality primary extract containing .alpha.-acids from hops using liquid CO.sub.2 and isomerizing the .alpha.-acids in the primary extract. The liquid CO.sub.2 extraction is performed at a sub-critical temperature of not less than -5.degree. C. The primary extract contains .alpha.-acids, .beta.-acids, hop oil and usually no significant amounts of other organic compounds originating from the hops. In the preferred method the primary extract is not purified and the isomerization is performed by boiling an alkaline solution of the extract. This boiling can be utilized to remove the hop oil. The .beta.-acids can be readily removed by acidifying the solution of iso-.alpha.-acid and filtering off the precipitated .beta.-acids. The iso-.alpha.Type: GrantFiled: September 19, 1979Date of Patent: November 3, 1981Assignee: Brewing Patents LimitedInventors: Derek R. J. Laws, Nigel A. Bath, Colin S. Ennis, John A. Pickett, Alfred G. Wheldon
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Patent number: 4212895Abstract: A method of providing a high quality iso-.alpha.-acid preparation is described. The method involves extracting a high quality primary extract containing .alpha.-acids from hops using liquid CO.sub.2 and isomerizing the .alpha.-acids in the primary extract. The liquid CO.sub.2 extraction is performed at a sub-critical temperature of not less than -5.degree. C. The primary extract contains .alpha.-acids, .beta.acids, hop oil and usually no significant amounts of other organic compounds originating from the hops. In the preferred method the primary extract is not purified and the isomerization is performed by boiling an alkaline solution of the extract. This boiling can be utilized to remove the hop oil. The .beta.-acids can be readily removed by acidifying the solution of iso-.alpha.-acid and filtering off the precipitated .beta.-acids. The iso-.alpha.Type: GrantFiled: May 3, 1977Date of Patent: July 15, 1980Assignee: Brewing Patents LimitedInventors: Derek R. J. Laws, Nigel A. Bath, Colin S. Ennis, John A. Pickett, Alfred G. Wheldon
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Patent number: 3981819Abstract: A family of luminescent materials or phosphors having a rhombohedral crystal structure and consisting essentially of a mixed host sulfide of at least one monovalent host cation and at least one trivalent host cation, and containing, for each mole of phosphor, 0.0005 to 0.05 mole of at least one activating cation. The monovalent host cations may be Na, K or Rb and Cs. The trivalent host cations may be Gd, La, Lu, Sc and Y. The activating cations may be one or more of trivalent As, Bi, Ce, Dy, Er, Pr, Sb, Sm, Tb and Tm; divalent Eu, Mn, Pb and Sn; and monovalent Ag, Cu, and Tl. The novel phosphors may be used in devices to convert electron-beam, ultraviolet or x-ray energy to light in the visible spectrum. Such energy conversion can be employed for example in fluoroscopic screens, and in viewing screens of cathode-ray tubes and other electron tubes.Type: GrantFiled: December 23, 1974Date of Patent: September 21, 1976Assignee: RCA CorporationInventors: Perry Niel Yocom, John Pickett Dismukes
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Patent number: 3970069Abstract: A solar heater/cooler assembly designed primarily for use with swimming pools with a pumping system and including heat exchanger coils and automatic temperature control to regulate the operation of the solar heater/cooler.Type: GrantFiled: February 24, 1975Date of Patent: July 20, 1976Inventor: John Pickett