Patents by Inventor John Crosby
John Crosby 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: 20250275773Abstract: Systems and methods for reaming bone can include an elongate body having a proximal end, a distal end, and an inner throughbore extending therebetween. An angled guide can be configured to engage the distal end of the elongate body and define a bearing surface at a predetermined angle relative to a centerline of the elongate body. A drive shaft can be configured to extend through the inner throughbore of the elongate body, the drive shaft having a distal end configured to extend beyond the distal end of the elongate body. A reamer head can be pivotably coupled to the distal end of the drive shaft, the reamer head having a distal-facing cutting surface configured to cut bone and a proximal-facing portion configured to bear against the bearing surface of the angled guide to orient the reamer head at the predetermined angle.Type: ApplicationFiled: March 1, 2024Publication date: September 4, 2025Inventors: ARMODIOS M. HATZIDAKIS, DREW MILLER, JAMES D. KELLY, II, SCOTT R. JACOBSON, HEINZ R. HOENECKE, JR., Brian Bowman, John Crosby
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Patent number: 8754240Abstract: The present invention relates to a chemical process for the manufacture of a compound of Formula IIType: GrantFiled: November 17, 2010Date of Patent: June 17, 2014Assignee: AstraZeneca ABInventors: Euan Alexander Arnott, John Crosby, Mathew Charles Evans, James Gair Ford, Martin Francis Jones, Kevin William Leslie, Ian Michael McFarlane, George Joseph Sependa
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Publication number: 20110257395Abstract: The present invention relates to chemical processes for the manufacture of certain quinazoline derivatives, or pharmaceutically acceptable salts thereof. The invention also relates to processes for the manufacture of certain intermediates useful in the manufacture of the quinazoline derivatives and to processes for the manufacture of the quinazoline derivatives utilising said intermediates. In particular, the present invention relates to chemical processes and intermediates useful in the manufacture of the compound 4-(4-fluoro-2-methylindol-5-yloxy)-6-methoxy-7-(3-pyrrolidin-1-ylpropoxy)quinazoline.Type: ApplicationFiled: November 17, 2010Publication date: October 20, 2011Applicant: AstraZeneca ABInventors: Euan Alexander Arnott, John Crosby, Matthew Charles Evans, James Gair Ford, Martin Francis Jones, Kevin William Leslie, Ian Michael McFarlane, George Joseph Sependa
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Patent number: 7851623Abstract: The present invention relates to chemical processes for the manufacture of certain quinazoline derivatives, or pharmaceutically acceptable salts thereof. The invention also relates to processes for the manufacture of certain intermediates useful in the manufacture of the quinazoline derivatives and to processes for the manufacture of the quinazoline derivatives utilising said intermediates. In particular, the present invention relates to chemical processes and intermediates useful in the manufacture of the compound 4-[(4-fluoro-2-methy-1-1H-indol-5-yl)oxy]-6-methoxy-7-[3-(pyrrolidin-1-yl)propoxy]quinazoline starting from a compound of Formula IX: wherein R4 is a protecting group; or an intermediate there between, using process steps, reagents and conditions as described.Type: GrantFiled: October 31, 2007Date of Patent: December 14, 2010Assignee: AstraZeneca ABInventors: Euan Alexander Arnott, John Crosby, Matthew Charles Evans, James Gair Ford, Martin Francis Jones, Kevin William Leslie, Ian Michael McFarlane, George Joseph Sependa
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Publication number: 20080221322Abstract: The present invention relates to chemical processes for the manufacture of certain quinazoline derivatives, or pharmaceutically acceptable salts thereof. The invention also relates to processes for the manufacture of certain intermediates useful in the manufacture of the quinazoline derivatives and to processes for the manufacture of the quinazoline derivatives utilising said intermediates. In particular, the present invention relates to chemical processes and intermediates useful in the manufacture of the compound 4-(4-fluoro-2-methylindol-5-yloxy)-6-methoxy-7-(3-pyrrolidin-1-ylpropoxy)quinazoline.Type: ApplicationFiled: October 31, 2007Publication date: September 11, 2008Applicant: AstraZeneca ABInventors: Euan Alexander Arnott, John Crosby, Mathew Charles Evans, James Gair Ford, Martin Francis Jones, Kevin William Leslie, Ian Michael McFarlane, George Joseph Sependa
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Patent number: 6362376Abstract: 2-Benzyloxyalkyl halophenones of the formula (3): wherein X1 and X2 are each independently H, Cl or F, provided that at least one of X1 and X2 is Cl or F; one of R3 and R4 is H and the other is optionally substituted benzyloxy; and R5 is an unsubstituted alkyl, preferably a C1-6 alkyl group. The compounds are useful as intermediates for preparing 2-hydroxyalkyl halophenones.Type: GrantFiled: August 8, 2001Date of Patent: March 26, 2002Assignee: Avecia LimitedInventors: John Crosby, Kevin Douglas Bailey, Michael John Monteith
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Patent number: 6300522Abstract: A process is provided for the preparation of compounds of Formula (1): wherein X1 and X2 are each independently H, Cl or F, provided that at least one of X1 and X2 is Cl or F; one of R1 and R2 is H and the other is OH; and R5 is an unsubstituted alkyl, preferably a C1-6 alkyl, group.Type: GrantFiled: November 29, 2000Date of Patent: October 9, 2001Assignee: Avecia LimitedInventors: John Crosby, Kevin Douglas Bailey, Michael John Monteith
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Patent number: 6261830Abstract: An enzymatic process for preparing amides of Formula I wherein X, E and * have the meanings defined in the specification. Chiral intermediates useful for preparing compound of Formula I and enzymatic processes for preparing such chiral intermediates are also described.Type: GrantFiled: May 31, 2000Date of Patent: July 17, 2001Assignee: Zeneca LTDInventors: John Crosby, John David Pittam, Robert Antony Holt
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Patent number: 6110729Abstract: A stereoselective method for making compounds of Formula VIII ##STR1## wherein A and * are as defined in the specification. Enzymic processes and intermediates useful for preparing compound of Formula VIII are disclosed.Type: GrantFiled: October 9, 1998Date of Patent: August 29, 2000Assignee: Zeneca LimitedInventors: John Crosby, John David Pittam, Robert Antony Holt
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Patent number: 5989509Abstract: A process for purifying elemental phosphorus that contains antimony using an oxidizer, such as hydrogen peroxide, peroxymonosulfate, peroxydisulfate, or a hypochlorite, in a two phase system containing water and phosphorus as the two liquids. A purified elemental phosphorus having 200 ppb or less antimony content.Type: GrantFiled: June 9, 1997Date of Patent: November 23, 1999Assignee: EMC CorporationInventors: Louis T. Gunkel, John Crosby, Theodore F. Munday, Paul J. Beck
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Patent number: 5670662Abstract: A process for the separation of at least one isomer from a mixture of isomers of a tetrahydropyran-2-one, having at least two chiral centres which comprises selective reaction of at least one isomer with a reagent catalysed by a hydrolase enzyme whereby at least one isomer is preferentially converted into a distinct chemical species from the other isomers so that it is susceptible of separation by an appropriate chemical or physical separation process in which the tetrahydropyran-2-one is of Formula (1): ##STR1## wherein: Z is --H or a protecting group susceptible of reaction with the reagent under the influence of the enzyme; andY is formyl or protected formyl.Type: GrantFiled: March 28, 1996Date of Patent: September 23, 1997Assignee: Zeneca LimitedInventors: John Crosby, Andrew Blacker, John Albert Leslie Herbert
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Patent number: 5527916Abstract: A process for the separation of at least one isomer from a mixture of isomers of a tetrahydropyran-2-one, having at least two chiral centers which comprises selective reaction of at least one isomer with a reagent catalyzed by a hydrolase enzyme whereby at least one isomer is preferentially converted into a distinct chemical species from the other isomers so that it is susceptible of separation by an appropriate chemical or physical separation process in which the tetrahydropyran-2-one is of Formula (1): ##STR1## wherein: Z is --H or a protecting group susceptible of reaction with the reagent under the influence of the enzyme; andY is formyl or protected formyl.Type: GrantFiled: August 1, 1994Date of Patent: June 18, 1996Assignee: Zeneca LimitedInventors: Andrew J. Blacker, John Crosby, John A. L. Herbert
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Patent number: 5443971Abstract: A process for the separation of at least one isomer from a mixture of isomers of a tetrahydropyran-2-one, having at least two chiral centers which comprises selective reaction of at least one isomer with a reagent catalyzed by a hydrolase enzyme whereby at least one isomer is preferentially converted into a distinct chemical species from the other isomers so that it is susceptible of separation by an appropriate chemical or physical separation process in which the tetrahydropyran-2-one is of Formula (1): ##STR1## wherein: Z is --H or a protecting group susceptible of reaction with the reagent under the influence of the enzyme; andY is formyl or protected formyl.Type: GrantFiled: September 17, 1992Date of Patent: August 22, 1995Assignee: Zeneca LimitedInventors: Andrew J. Blacker, John Crosby, John A. L. Herbert
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Patent number: 5443970Abstract: A process for the separation of at least one isomer from a mixture of isomers of a tetrahydropyran-2-one, having at least two chiral centres, which comprises selective reaction of at least one isomer with a reagent catalysed by a hydrolase enzyme whereby at least one isomer is preferentially converted into a distinct chemical species from the other isomers so that it is susceptible of separation by an appropriate chemical or physical separation process in which the tetrahydropyranone is of Formula (1): ##STR1## wherein: Z is --H or a protecting group susceptible of reaction with the reagent under the influence of the enzyme; andY is optionally substituted hydrocarbyl.Type: GrantFiled: September 17, 1992Date of Patent: August 22, 1995Assignee: Zeneca LimitedInventors: Andrew J. Blacker, John Crosby, John A. L. Herbert
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Patent number: 5206404Abstract: The invention is a novel composition of alkylated phenyl phosphate esters comprising by weight 1% to 20% trialkylphenyl phosphate, 10% to 50% dialkylphenyl monophenyl phosphate, 15% to 60% monoalkylphenyl diphenyl phosphate and less than 2% triphenyl phosphate and a process for preparing the composition comprising passing the composition at least once through a thin film evaporator at a temperature of about 200.degree. C. to about 250.degree. C. at a pressure sufficiently less than 5 kPa to evaporate about 5% to about 30% of the composition.Type: GrantFiled: April 27, 1992Date of Patent: April 27, 1993Assignee: FMC CorporationInventors: Louis T. Gunkel, Douglas G. Placek, Michael P. Marino, Jr., John Crosby, Sundeep G. Shankwalkar
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Patent number: 4970019Abstract: A manufacturing process and composition is claimed for a composition of matter comprising sodium carbonate, sodium carbonate perhydrate, a fluorescent whitening agent and a diphosphonic acid. The process comprises incorporating the fluorescent whitening agent and diphosphonic acid into aqueous hydrogen peroxide, uniformly applying the hydrogen peroxide solution to particulate sodium carbonate to form a reaction mixture, urging water vapor from the surface of the reaction mixture and maintaining the temperature of the reaction mixture between about 35.degree. C. and 80.degree. C.Type: GrantFiled: October 27, 1988Date of Patent: November 13, 1990Assignee: FMC CorporationInventors: John Crosby, Joseph C. Richards
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Patent number: 4897502Abstract: A process is provided for making halogen-substituted triaryl phosphate esters which are normally solid under ambient conditions. The process comprises reacting a halogenated phenol with phosphorus oxychloride in the presence of a magnesium chloride catalyst above the melting point of the desired product. After the reaction is complete the product is recovered by adding an alcohol, such as, pentanol, 2-ethyl hexanol or hexanol and cooling the resulting mixture below the melting point of the product.Type: GrantFiled: October 7, 1987Date of Patent: January 30, 1990Assignee: FMC CorporationInventors: Louis T. Gunkel, John Crosby
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Patent number: 4766240Abstract: An environmentally acceptable process is provided to synthesize a 2-(alkylbenzoyl)benzoic acid suitable for synthesizing a 2-alkylanthraquinone without further purification. Usually the crude product is isolated from the reaction mixture by a succession of steps which generate a large volume of aqueous waste. The present process eliminates or decreases these wastes and produces a product of sufficient purity for synthesizing as 2-alkylanthraquinone.Type: GrantFiled: April 24, 1987Date of Patent: August 23, 1988Assignee: FMC CorporationInventors: Louis T. Gunkel, John Crosby
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Patent number: 4551281Abstract: 3-(2'-chloro-3',3',3'-trifluoropropenyl)-2,2-dimethylcyclopropane-1-carboxy lic acid esters are prepared by dehydrohalogenation of the corresponding 3-(2',2'-dichloro-3',3',3-trifluoropropyl) compounds by reaction with an alkali metal carbonate in a polar aprotic solvent. The products are intermediates in the preparation of pyrethroid insecticides or are themselves insecticides.Type: GrantFiled: August 27, 1984Date of Patent: November 5, 1985Assignee: Imperial Chemical Industries PLCInventor: John Crosby
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Patent number: 4510098Abstract: A novel crystalline modification of an enantiomeric pair of isomers of the insecticide cyhalothrin having improved handling characteristics.Type: GrantFiled: September 26, 1983Date of Patent: April 9, 1985Assignee: Imperial Chemical Industries PLCInventor: John Crosby