Patents by Inventor Brian K. Cheng

Brian K. Cheng 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).

  • Patent number: 11191731
    Abstract: A film coating composition comprising a cellulosic polymer, an opacifying agent, and a fatty acid is disclosed herein. Also disclosed is a film coating composition comprising a cellulosic polymer, an opacifying agent, a plasticizing agent, and a polyol. The disclosed film coating compositions may be mixed with a solvent to produce a film coating suspension. The film coating suspension can be applied to a substrate, such as a nutritional supplement, pharmaceutical, tablet, capsule, softgel, granule, particle, food confectionary form, agricultural seed, and the like to form a film coating on the substrate. Methods of coating a substrate with the film coating suspensions are also provided.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: December 7, 2021
    Assignee: Sensient Colors LLC
    Inventors: Beverly A. Schad, Brian K. Cheng
  • Publication number: 20190321300
    Abstract: A film coating composition comprising a cellulosic polymer, an opacifying agent, and a fatty acid is disclosed herein. Also disclosed is a film coating composition comprising a cellulosic polymer, an opacifying agent, a plasticizing agent, and a polyol. The disclosed film coating compositions may be mixed with a solvent to produce a film coating suspension. The film coating suspension can be applied to a substrate, such as a nutritional supplement, pharmaceutical, tablet, capsule, softgel, granule, particle, food confectionary form, agricultural seed, and the like to form a film coating on the substrate. Methods of coating a substrate with the film coating suspensions are also provided.
    Type: Application
    Filed: November 15, 2018
    Publication date: October 24, 2019
    Inventors: Beverly A. Schad, Brian K. Cheng
  • Patent number: 10159650
    Abstract: A film coating composition comprising a cellulosic polymer, an opacifying agent, and a fatty acid is disclosed herein. Also disclosed is a film coating composition comprising a cellulosic polymer, an opacifying agent, a plasticizing agent, and a polyol. The disclosed film coating compositions may be mixed with a solvent to produce a film coating suspension. The film coating suspension can be applied to a substrate, such as a nutritional supplement, pharmaceutical, tablet, capsule, softgel, granule, particle, food confectionary form, agricultural seed, and the like to form a film coating on the substrate. Methods of coating a substrate with the film coating suspensions are also provided.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: December 25, 2018
    Assignee: Sensient Colors LLC
    Inventors: Beverly A. Schad, Brian K. Cheng
  • Publication number: 20170281553
    Abstract: A film coating composition comprising a cellulosic polymer, an opacifying agent, and a fatty acid is disclosed herein. Also disclosed is a film coating composition comprising a cellulosic polymer, an opacifying agent, a plasticizing agent, and a polyol. The disclosed film coating compositions may be mixed with a solvent to produce a film coating suspension. The film coating suspension can be applied to a substrate, such as a nutritional supplement, pharmaceutical, tablet, capsule, softgel, granule, particle, food confectionary form, agricultural seed, and the like to form a film coating on the substrate. Methods of coating a substrate with the film coating suspensions are also provided.
    Type: Application
    Filed: November 15, 2016
    Publication date: October 5, 2017
    Inventors: Beverly A. Schad, Brian K. Cheng
  • Patent number: 9492395
    Abstract: A film coating composition comprising a cellulosic polymer, an opacifying agent, and a fatty acid is disclosed herein. Also disclosed is a film coating composition comprising a cellulosic polymer, an opacifying agent, a plasticizing agent, and a polyol. The disclosed film coating compositions may be mixed with a solvent to produce a film coating suspension. The film coating suspension can be applied to a substrate, such as a nutritional supplement, pharmaceutical, tablet, capsule, softgel, granule, particle, food confectionary form, agricultural seed, and the like to form a film coating on the substrate. Methods of coating a substrate with the film coating suspensions are also provided.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: November 15, 2016
    Assignee: SENSIENT COLORS LLC
    Inventors: Beverly A. Schad, Brian K. Cheng
  • Publication number: 20130115285
    Abstract: An enteric coating composition including about 0.01% to about 10% resin and about 0.01% to about 10% polymer. The enteric coating composition may be applied to a substrate, such as a pharmaceutical, nutraceutical, fruit, vegetable, agricultural product, or industrial product, to form an enteric coating on the substrate. Also provided is a multiple-component system having a first component including a resin and a second component including a polymer, wherein mixing the first component and the second component forms an enteric coating composition having about 0.01% to about 10% resin and about 0.01% to about 10% polymer. Methods for coating a substrate with the enteric coating compositions are also provided.
    Type: Application
    Filed: February 12, 2011
    Publication date: May 9, 2013
    Inventors: Eric H. Van Ness, Beverly A. Schad, Thomas C. Riley, Brian K. Cheng
  • Publication number: 20110280942
    Abstract: A film coating composition comprising a cellulosic polymer, an opacifying agent, and a fatty acid is disclosed herein. Also disclosed is a film coating composition comprising a cellulosic polymer, an opacifying agent, a plasticizing agent, and a polyol. The disclosed film coating compositions may be mixed with a solvent to produce a film coating suspension. The film coating suspension can be applied to a substrate, such as a nutritional supplement, pharmaceutical, tablet, capsule, softgel, granule, particle, food confectionary form, agricultural seed, and the like to form a film coating on the substrate. Methods of coating a substrate with the film coating suspensions are also provided.
    Type: Application
    Filed: May 11, 2011
    Publication date: November 17, 2011
    Inventors: Beverly A. Schad, Brian K. Cheng
  • Publication number: 20100316585
    Abstract: The invention provides lubricant compositions comprising magnesium stearate dihydrate. The lubricant compositions may be used to lubricate a variety of solid materials that are used in industrial or consumer products.
    Type: Application
    Filed: February 11, 2009
    Publication date: December 16, 2010
    Inventors: Stephen H. Wu, Brian K. Cheng, Gary A. Nichols, Jae H. Park
  • Publication number: 20100056574
    Abstract: The present invention provides crystalline forms of sufentanil citrate and methods for preparing crystalline forms of sufentanil citrate.
    Type: Application
    Filed: August 25, 2009
    Publication date: March 4, 2010
    Applicant: Mallinckrodt Inc.
    Inventors: Brian K. Cheng, Gary A. Nichols
  • Publication number: 20090232896
    Abstract: The invention provides lubricant compositions comprising magnesium stearate dihydrate. The lubricant compositions may be used to lubricate a variety of bioactive formulations including pharmaceutical compositions.
    Type: Application
    Filed: February 11, 2009
    Publication date: September 17, 2009
    Applicant: Mallinckrodt Inc.
    Inventors: Stephen H. Wu, Brian K. Cheng, Gary A. Nichols, Jae H. Park
  • Publication number: 20080319196
    Abstract: An improved process for synthesizing opiate or opioid analgesics and anesthetics, and intermediates thereof is provided. In particular, processes of synthesizing intermediates for use in the preparation of synthetic opiate or opioid compounds such as, for example, remifentanil, carfentanil, sufentanil, fentanyl, and alfentanil are disclosed. The preparation process requires fewer steps, and results in reduced costs and higher efficiency than processes known in the art for producing remifentanil and carfentanil.
    Type: Application
    Filed: October 23, 2006
    Publication date: December 25, 2008
    Inventor: Brian K. Cheng
  • Publication number: 20080319197
    Abstract: The present invention relates to a crystalline polymorphic form of remifentanil hydrochloride. The invention also describes methods of preparing a polymorphic form of remifentanil hydrochloride.
    Type: Application
    Filed: January 19, 2007
    Publication date: December 25, 2008
    Inventors: Brian K. Cheng, Gary A. Nichols, Catherine E. Thomasson
  • Publication number: 20080312448
    Abstract: A process for synthesizing remifentanil or carfentanil, as well as intermediates for use in the preparation of synthetic opiate or opioid compounds. The process comprising reacting a 4-amino 4-carbamyl piperidine with a base in a closed reaction chamber at elevated temperature and pressure to form to intermediate which may be esterified with an alcohol, alkylated, and acylated to produce a synthetic opiate or opioid compound.
    Type: Application
    Filed: January 8, 2007
    Publication date: December 18, 2008
    Inventor: Brian K. Cheng
  • Publication number: 20080293946
    Abstract: A method for preparing a polymorph of a hemitartrate salt of a compound having the structure: comprising dissolving a free base form of the compound in a liquid medium comprising an alcohol and a tartrate derivative to form a solution comprising the compound, the alcohol, and the tartrate derivative; heating the solution to a temperature sufficient to dissolve the compound and the tartrate derivative; and cooling the solution to a temperature sufficient to precipitate the hemitartrate salt of the compound.
    Type: Application
    Filed: September 19, 2006
    Publication date: November 27, 2008
    Inventor: Brian K. Cheng
  • Publication number: 20080200680
    Abstract: A method for converting polymorphs of Zolpidem hemitartrate, the method comprising treating tablets comprising Zolpidem hemitartrate with heat and/or moisture.
    Type: Application
    Filed: September 28, 2006
    Publication date: August 21, 2008
    Inventors: Brian K. Cheng, Stephen H. Wu
  • Patent number: 5852161
    Abstract: An improved method for the synthesis of low molecular weight polyaniline provides for heating a para-haloaniline in the presence of a high-boiling organic solvent and a vanadium catalyst. A neutral polyaniline can be synthesized by removing hydrogen halide as it is produced.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: December 22, 1998
    Assignee: Monsanto Company
    Inventor: Brian K. Cheng
  • Patent number: 5703273
    Abstract: A process for preparing N-hydroxyalkylaminomethyl-phosphonic acid or salts thereof which comprises contacting an alkanolamine, formaldehyde and a trialkyl phosphite under suitable reaction conditions to produce a reaction mixture, and hydrolyzing the reaction mixture under neutral, acidic or basic conditions. In one embodiment, the N-hydroxyalkylaminomethylphosphonic acid or salts thereof is catalytically oxidized to produce an N-phosphonomethylaminocarboxylic acid or salts thereof.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: December 30, 1997
    Assignee: Monsanto Company
    Inventors: Michael K. Stern, Brian K. Cheng, Jerry R. Ebner, Dennis P. Riley
  • Patent number: 5602276
    Abstract: A process for preparing N-hydroxyalkylaminomethylphosphonic acid or salts thereof which comprises contacting an alkanolamine, formaldehyde and a dialkyl phosphite in the presence of an alcohol under suitable reaction conditions to produce a reaction mixture, and hydrolyzing the reaction mixture under acidic or basic conditions. In one embodiment, the N-hydroxyalkylaminomethylphosphonic acid or salts thereof is catalytically oxidized to produce an N-phosphonomethylaminocarboxylic acid or salts thereof.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: February 11, 1997
    Assignee: Monsanto Company
    Inventors: Michael K. Stern, Brian K. Cheng, Jerry R. Ebner, Dennis P. Riley
  • Patent number: 5436371
    Abstract: A process for preparing p-nitroaromatic amides is provided which comprises contacting a nitrile, nitrobenzene, a suitable base and water in the presence of a suitable solvent system to form a mixture, and reacting the mixture at a suitable temperature in a confined reaction zone in the presence of a controlled amount of protic material. The p-nitroaromatic amides of the invention can be reduced to p-aminoaromatic amides. In one embodiment, the p-aminoaromatic amide is further reacted with ammonia under conditions which produce the corresponding p-aminoaromatic amine and the amide corresponding to the nitrile starting material or with water in the presence of a suitable basic or acidic catalyst under conditions which produce the corresponding p-aminoaromatic amine and the acid or salt thereof corresponding to the nitrile starting material. In another embodiment, the p-aminoaromatic amine is reductively alkylated to produce alkylated p-aminoaromatic amine.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: July 25, 1995
    Assignee: Monsanto Company
    Inventors: Michael K. Stern, Brian K. Cheng
  • Patent number: 5252737
    Abstract: A process for preparing N-aliphatic substituted p-phenylenediamine intermediates is provided which comprises contacting an aliphatic amine or substituted aliphatic amine derivative and nitrobenzene in the presence of a suitable solvent system, and reacting the aliphatic amine or substituted aliphatic amine derivative and nitrobenzene in the presence of a suitable base and a controlled amount of protic material at a suitable temperature in a confined reaction zone. In one embodiment, the N-aliphatic substituted p-phenylenediamine intermediates are reduced to N-aliphatic substituted p-phenylenediamines and the N-aliphatic substituted p-phenylenediamines can be reductively alkylated to N'-alkylated, N-aliphatic substituted p-phenylenediamines. In another embodiment of the invention, N-aliphatic substituted p-phenylenediamine intermediates are reductively alkylated to N'-alkylated, N-aliphatic substituted p-phenylenediamines.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: October 12, 1993
    Assignee: Monsanto Company
    Inventors: Michael K. Stern, Brian K. Cheng