Patents by Inventor David R. Andrews
David R. Andrews 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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Publication number: 20100249411Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process:Type: ApplicationFiled: March 29, 2010Publication date: September 30, 2010Inventors: Wenxue Wu, Hongbiao Liao, David J.S. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann
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Patent number: 7745626Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process:Type: GrantFiled: March 25, 2005Date of Patent: June 29, 2010Assignee: Schering CorporationInventors: Wenxue Wu, Hongbiao Liao, David J. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann
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Patent number: 7129357Abstract: In one embodiment, the present application discloses a process for making the compound of the formula:Type: GrantFiled: September 13, 2004Date of Patent: October 31, 2006Assignee: Schering CorporationInventors: David R. Andrews, Suhan Tang, Wenxue Wu, Sami Y. Kalliney, Anantha Sudhakar, Christopher Nielsen
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Patent number: 6958337Abstract: The crystalline polymorph Form I of (?)-4-[4-[4-[4-[[(2R-cis)-5-(2,4-difluorophenyl)tetrahydro-5-(1H-1,2,4-triazol-1-ylmethyl)furan-3-yl]methoxy]phenyl]-1-piperazinyl]phenyl-2,4-dihydro-2-[(S)-1-ethyl-2(S)-hydroxylpropyl]-3H-1,2,4-triazol-3-one represented by the formula I pharmaceutical compositions containing such a polymorph and methods of using such a polymorph to treat fungal infections in mammals are disclosed.Type: GrantFiled: February 25, 2004Date of Patent: October 25, 2005Assignee: Schering CorporationInventors: David R. Andrews, William Leong, Anantha Sudhakar
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Patent number: 6872826Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process:Type: GrantFiled: March 27, 2003Date of Patent: March 29, 2005Assignee: Schering CorporationInventors: Wenxue Wu, Hongbiao Liao, David J. S. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann
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Publication number: 20040204423Abstract: The crystalline polymorph Form I of (−)-4-[4-[4-[4-[[(2R-cis)-5-(2,4-difluorophenyl)tetrahydro-5-(1H-1,2,4-triazol-1-ylmethyl)furan-3-yl]methoxy]phenyl]-1-piperazinyl]phenyl-2,4-dihydro-2-[(S)-1-ethyl-2(S)-hydroxylpropyl]-3H-1,2,4-triazol-3-one represented by the formula I 1Type: ApplicationFiled: February 25, 2004Publication date: October 14, 2004Inventors: David R. Andrews, William Leong, Anantha Sudhakar
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Patent number: 6713481Abstract: The crystalline polymorph Form I of (−)-4-[4-[4-[4-[[(2R-cis)-5-(2,4-difluorophenyl)tetrahydro-5-(1H-1,2,4-triazol-1-ylmethyl)furan-3-yl]methoxy]phenyl]-1-piperazinyl]phenyl-2,4-dihydro-2-[(S)-1-ethyl-2(S)-hydroxylpropyl]-3H-1,2,4-triazol-3-one represented by the formula I pharmaceutical compositions containing such a polymorph and methods of using such a polymorph to treat fungal infections in mammals are disclosed.Type: GrantFiled: October 5, 1998Date of Patent: March 30, 2004Inventors: David R. Andrews, William Leong, Anantha Sudhakar
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Publication number: 20030208074Abstract: In an illustrative embodiment, the present invention describes the synthesis of the following compound and similar compounds, in high stereochemical purity by a novel stereoselective alkylation process: 1Type: ApplicationFiled: March 27, 2003Publication date: November 6, 2003Applicant: Schering CorporationInventors: Wenxue Wu, Hongbiao Liao, David J. S. Tsai, David R. Andrews, Dinesh Gala, Gary M. Lee, Martin Lawrence Schwartz, Timothy L. McAllister, Xiaoyong Fu, Donal Maloney, Tiruvettipuram K. Thiruvengadam, Chou-Hang Tann
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Patent number: 5857656Abstract: A suspension apparatus is provided for hanging a space heater having a generally circular top cover for use in a livestock or poultry house. The suspension apparatus is designed to decrease the distance from a support cable end to the top of a space heater, thereby increasing the clearance between the space heater and the floor of the animal house. The suspension apparatus includes a Y-shaped member having a first arm and a second arm that are substantially equal in length. The Y-shaped member additionally includes a third arm that is shorter than the first and second arms. The first, second and third arms of the Y-shaped member are substantially in a common plane. An extension arm is provided, which is slidably mounted on and in parallel relation to the third arm of the Y-shaped member. The first and second arms of the Y-shaped member and the extension arm are engageable with apertured tabs typically provided on a top cover of a space heater. A hook element is fashioned on the extension arm.Type: GrantFiled: May 30, 1997Date of Patent: January 12, 1999Assignee: Sibley Industries, Inc.Inventors: Michael J. O'Herin, Jr., Gary L. Anderson, David R. Andrews
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Patent number: 5686646Abstract: Disclosed are chiral hydrazine derivatives of the formula (Ia), (Ib), (Ic) and (Id) ##STR1## wherein: R.sup.1 and R.sup.2 are independently C.sub.1 -C.sub.10 alkyl;R.sup.3 is H or R.sup.4 wherein R.sup.4 is a hydroxy protecting group; andZ is H, --CHO, --C(O)OC(CH.sub.3).sub.3 or --C(O)OCH.sub.2 C.sub.6 H.sub.5.Also described is a process for preparing chiral hydrazines of the formula (Ia), (Ib), (Ic) and (Id).Type: GrantFiled: May 23, 1995Date of Patent: November 11, 1997Assignee: Schering-Plough CorporationInventors: David R. Andrews, Anantha Sudhakar
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Patent number: 5625064Abstract: Described is a process for preparing triazolone compounds of the formula ##STR1## comprising heating a mixture of a compound of the formula ##STR2## and a hydrazine derivative of the formula R.sup.5 --NH--NH--CHO, R.sup.5 --NH--NH--C(O)OC(CH.sub.3).sub.3 or R.sup.5 --NH--NH--C(O)OCH.sub.2 C.sub.6 H.sub.5, optionally in the presence of an added base.Type: GrantFiled: June 2, 1995Date of Patent: April 29, 1997Assignee: Schering CorporationInventors: David R. Andrews, Dinesh Gala, Jacques Gosteli, Frank Guenter, William Leong, Ingrid Mergelsberg, Anantha Sudhakar
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Patent number: 5616777Abstract: Disclosed are chiral hydrazine derivatives of the formula (Ia), (Ib), (Ic) and (Id) ##STR1## wherein: R.sup.1 and R.sup.2 are independently C.sub.1 -C.sub.10 alkyl;R.sup.3 is H or R.sup.4 wherein R.sup.4 is a hydroxy protecting group; andZ is H, --CHO, --C(O)OC(CH.sub.3).sub.3 or --C(O)OCH.sub.2 C.sub.6 H.sub.5.Also described is a process for preparing chiral hydrazines of the formula (Ia), (Ib), (Ic) and (Id).Type: GrantFiled: April 19, 1995Date of Patent: April 1, 1997Assignee: Schering CorporationInventors: David R. Andrews, Anantha Sudhakar
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Patent number: 5502183Abstract: Novel steroids having a 9.alpha.-hydroxy or a 9.alpha.-carbonate substituent can be prepared from 9.alpha.-hydroxyandrostenedione and can be utilized in the synthesis of commercially valuable corticosteroids such as betamethasone. The 9.alpha.-carbonates are prepared by reaction of the corresponding 9.alpha.-hydroxy steroid with a sequence of excess base, trialkylsilyl chloride, alkyl haloformate and alkanol or by using excess base, alkyl haloformate and alkoxide. 9.alpha.-Carbonate-17-keto compounds can be treated with lithium acetylide and a lithium salt to afford the corresponding 17.alpha.-ethynyl-17.beta.-hydroxy-9.alpha.-carbonate. This compound is then esterified with a novel series of reagents to give the 17-ester which can be reduced the corresponding 17-allene. Oxidation of this allene to the bis-epoxide compound, followed by treatment with an alkali metal salt of a carboxylic acid under phase transfer conditions gives the 17.alpha.-hydroxy 21-ester 9.alpha.-carbonate. Elimination of the 9.alpha.Type: GrantFiled: July 25, 1994Date of Patent: March 26, 1996Assignee: Schering CorporationInventors: David R. Andrews, Anantha R. Sudhakar
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Patent number: 5141189Abstract: A device for holding a curling iron, during and after use, in a safe environment, which comprises base members, resilient clip, and protective heat shield, where the base members provide a means for mounting the device and supports the clip and protective heat shield, the clip firmly grips the curling iron handle, and the protective heat shield surrounds the curling iron barrel, preventing accidental contact with the heated barrel.Type: GrantFiled: May 6, 1991Date of Patent: August 25, 1992Inventor: David R. Andrew
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Patent number: 5017567Abstract: Methods and pharmaceutical compositions are disclosed for reducing intraocular pressure. The methods and compositions employ an active ingredient which comprises certain benzothiadiazinyl and quinazolinyl substituted carboxyalkyl dipeptides wherein the benzothiadiazinyl or quinazolinyl portions are joined to the dipeptide portions by an aminocarbonyl group.Type: GrantFiled: January 3, 1990Date of Patent: May 21, 1991Assignee: Schering CorporationInventors: Bernard R. Neustadt, David R. Andrews, Paul E. McNamara, Robert W. Watkins
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Patent number: 5015641Abstract: Pharmaceutical compositions and a method for reducing intraocular pressure by topically applying a carboxyalkyl dipeptide are disclosed.Type: GrantFiled: May 9, 1989Date of Patent: May 14, 1991Inventors: David R. Andrews, Federico C. A. Gaeta, Robert W. Watkins
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Patent number: 4906635Abstract: Methods and pharmaceutical compositions are disclosed for reducing intraocular pressure. The methods and compositions employ an active ingredient which comprises certain benzothiadiazinyl and quinazolinyl substituted carboxyalkyl dipeptides wherein the benzothiadiazinyl or quinazolinyl portions are joined to the dipeptide portions by an aminocarbonyl group.Type: GrantFiled: July 18, 1988Date of Patent: March 6, 1990Assignee: Schering CorporationInventors: Bernard R. Neustadt, David R. Andrews, Paul E. McNamara, Robert W. Watkins
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Patent number: 4885293Abstract: Pharmaceutical compositions and a method for reducing intraocular pressure by topically applying a carboxyalkyl dipeptide are disclosed.Type: GrantFiled: July 30, 1986Date of Patent: December 5, 1989Assignee: Schering CorporationInventors: David R. Andrews, Federico C. A. Gaeta, Robert W. Watkins
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Patent number: 4826816Abstract: Antihypertensive compounds with angiotensin-converting enzyme inhibitory activity and diuretic activity are disclosed. Such compounds are useful in the treatment of cardiovascular disorders, especially hypertension and congestive heart failure, and are useful in the treatment of glaucoma.Type: GrantFiled: October 4, 1985Date of Patent: May 2, 1989Assignee: Schering CorporationInventors: David R. Andrews, Federico C. A. Gaeta
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Patent number: 4778795Abstract: Methods and pharmaceutical compositions are disclosed for reducing intraocular pressure. The methods and compositions employ an active ingredient which comprises certain benzothiadiazinyl and quinazolinyl substituted carboxyalkyl dipeptides wherein the benzothiadiazinyl or quinazolinyl portions are joined to the dipeptide portions by an aminocarbonyl group.Type: GrantFiled: September 3, 1986Date of Patent: October 18, 1988Assignee: Schering CorporationInventors: Bernard R. Neustadt, David R. Andrews, Paul E. McNamara, Robert W. Watkins