Patents by Inventor Ram B. Gupta

Ram B. Gupta 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).

  • Publication number: 20150315465
    Abstract: Stabilizer compositions for stabilizing materials against degradation due to thermal and ultraviolet light exposure are disclosed herein.
    Type: Application
    Filed: April 30, 2015
    Publication date: November 5, 2015
    Applicant: CYTEC INDUSTRIES INC.
    Inventors: Ram B. Gupta, Jerry Mon Hei Eng, Fadi Khawam, Ranjan Kumar Kamat
  • Publication number: 20150297706
    Abstract: Disclosed are compositions, kits, and methods for inducing an immune response against an infection or a disease. The compositions typically include biodegradable particles having an average effective diameter of 0.5-20 ?m, and optionally the compositions include one or more of an adjuvant, an apoptosis inhibitor, and an antigen. The compositions, kits, and methods may be utilized to induce a cell-mediated response, such as a T-helper cell response, and/or a humoral response against a pathogen or a disease. In some embodiments, the compositions, kits, and methods may be utilized to induce preferentially a Th1 response versus other types of immune responses such as a Th2 response.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 22, 2015
    Applicant: Auburn University
    Inventors: Bernhard Kaltenboeck, Ram B. Gupta, Erfan U. Chowdhury, Courtney A. Ober
  • Publication number: 20150135445
    Abstract: A method for treating a fabric for ultraviolet radiation protection is disclosed which comprises the steps of adding zinc oxide nanoparticles to a solution of 3-glycidyloxypropyl-trimethoxysilane, adding silicon dioxide to the mixture of zinc oxide nanoparticles and 3-glycidyloxypropyl-trimethoxysilane, placing a fabric in the mixture of zinc oxide nanoparticles, 3-glycidyloxypropyl-trimethoxysilane, and silicon dioxide, curing the fabric, and washing the fabric.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 21, 2015
    Inventors: Robert B. Kramer, Ronald Kramer, Nicholas Marshall, Jason Rosenberg, Ram B. Gupta
  • Publication number: 20150107029
    Abstract: A method for treating a fabric for ultraviolet radiation protection, enhanced resistance to degradation, and enhanced resistance to fire is disclosed which comprises the steps of adding zinc oxide nanoparticles to a solution of 3-glycidyloxypropyl-trimethoxysilane, placing a fabric in the mixture of zinc oxide particles and 3-glycidyloxypropyl-trimethoxysilane, curing the fabric, and washing the fabric. Other methods of treating a fabric are disclosed.
    Type: Application
    Filed: October 24, 2014
    Publication date: April 23, 2015
    Inventors: Robert B. Kramer, Ronald Kramer, Nicholas Marshall, Jason Rosenberg, Ram B. Gupta
  • Publication number: 20150080523
    Abstract: This invention relates to products H made by reaction of a cyclic alkyleneurea U, at least one multifunctional aldehyde A2, and at least one of (a) an aminoplast former M that is not the same as the cyclic alkyleneurea U, and (b) a monofunctional aldehyde A1, which product H is optionally etherified by reaction of at least a part of the hydroxyl groups formed by addition reaction of N—H groups and aldehyde groups, with an alcohol having from one to ten carbon atoms, and wherein glyoxal is present in the at least one multifunctional aldehyde A2, to processes for their preparation, and to a method of use thereof in coating compositions.
    Type: Application
    Filed: March 22, 2013
    Publication date: March 19, 2015
    Inventors: Ram B. Gupta, Urvee Y. Treasurer, Lawrence A. Flood, Barry A. Lawless
  • Patent number: 8637718
    Abstract: A method and system of converting biomass to biochar in a hydrothermal carbonization apparatus wherein subcritical water at a temperature of 230-350° C. and 500-3000 psi is reacted with the biomass to form biochar, biocrude and gases. The method and system include recycling the biocrude back to the hydrothermal carbonization apparatus which improves biochar yield and provides water for the biomass reaction to occur.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: January 28, 2014
    Assignee: Auburn University
    Inventors: Ram B. Gupta, Sandeep Kumar, Lingzhao Kong
  • Publication number: 20130203929
    Abstract: The invention relates to a reaction product UA of at least one cyclic urea U and at least one multifunctional aldehyde A which reaction product has as substituents on the carbonyl carbon atoms of the aldehyde A at least one kind of functional groups selected from the group consisting of hydroxyl groups —OH and alkoxy groups —OR characterised in that the groups —OR comprise at least two kinds of alkoxy groups —OR1 and —OR2, where R1 and R2 are both selected from the group consisting of linear, branched or cyclic alkyl groups having from one to twelve carbon atoms, where R1 and R2 may be the same or may be different from each other, to a process of making these, and to a method of use as crosslinker in coating compositions.
    Type: Application
    Filed: September 23, 2011
    Publication date: August 8, 2013
    Inventors: Ram B. Gupta, Lawrence A. Flood, Urvee Y. Treasurer, Barry A. Lawless, Colin Brogan
  • Publication number: 20130189442
    Abstract: This invention relates to a process to make a reaction product UA of at least one multifunctional aldehyde A with at least one cyclic urea U, by mixing the at least one multifunctional aldehyde A with the at least one cyclic urea U in the presence of at least one alcohol R1—OH, and optionally, at least one solvent that has no reactive groups which may react with aldehyde groups, —CO—NH— groups, or hydroxyl groups, to effect an addition reaction to obtain a solution of a product UA, where R1 is selected from the group consisting of linear, branched or cyclic alkyl groups having from one to twelve carbon atoms, to the reaction product obtained by this process, and to a method of use thereof as crosslinker for coating compositions.
    Type: Application
    Filed: September 23, 2011
    Publication date: July 25, 2013
    Inventors: Ram B. Gupta, Lawrence A. Flood, Urvee Y. Treasurer, Barry A. Lawless, Colin Brogan
  • Publication number: 20130189438
    Abstract: The invention relates to a crosslinker composition comprising a reaction product of a cyclic urea U and a multi-functional aliphatic aldehyde A, and at least one crosslinker selected from the group consisting of reaction products of an amino-triazine and at least one aldehyde selected from the group consisting of aliphatic monoaldehydes and multifunctional aliphatic aldehydes having the structure Y(CHO)n, where Y is an n-functional aliphatic residue, and n is greater than 1; reaction products of urea and/or cyclic ureas and formaldehyde; alkoxycarbonyl-aminotriazines; multifunctional isocyanates which may be partially or completely blocked; reaction products of phenols and aliphatic monoaldehydes; multifunctional epoxides; multifunctional aziridines; and multifunctional carbodiimides, wherein any of the crosslinkers which have hydroxyl groups may be etherified with one or more linear, branched, or cyclic aliphatic alcohols.
    Type: Application
    Filed: September 23, 2011
    Publication date: July 25, 2013
    Inventors: Ram B. Gupta, Lawrence A. Flood, Urvee Y. Treasurer, Barry A. Lawless, Colin Brogan
  • Publication number: 20110179703
    Abstract: The present invention relates to a method for conversion of biomass to biochar in subcritical water at 230-350° C. and 500-3000 psi. Under subcritical water conditions, biomass readily converts into biochar, biocrude, and some gases. In this invention, yield of biochar is significantly improved by recycling of biocrude. The process can produce hydrophobic biochar that has at least 70 wt % (dry basis) carbon as opposed to ˜25 wt % carbon in hydrophilic biomass, and has a heating value of about 29 MJ/kg (HHV-dry basis) which is comparable to good quality coals. More than 90% energy of biomass is retained in the biochar. The invention provides an effective means to convert biomass into a high energy density fuel for use in a variety of applications.
    Type: Application
    Filed: September 3, 2010
    Publication date: July 28, 2011
    Applicant: AUBURN UNIVERSITY
    Inventors: Ram B. GUPTA, Sandeep KUMAR, Lingzhao KONG
  • Publication number: 20090203817
    Abstract: Compounds of the formula (I) as defined herein are useful for stabilizing spandex. Stabilized spandex compositions are obtained by intermixing spandex polymer or prepolymer with stabilizing amounts of one or more compounds of the formula (I). Preferred stabilized spandex polymer or prepolymer compositions exhibit improved color stability.
    Type: Application
    Filed: April 12, 2007
    Publication date: August 13, 2009
    Inventors: Joseph A. Stretanski, Thomas Sassi, Ram B. Gupta
  • Patent number: 7485723
    Abstract: It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at least one reaction promoter. This reaction is also unprecedently general as a variety of aromatics can be used to produce a wide selection of 2-halo-4,6-bisaryl-1,3,5-triazines. The novel approach includes the use of the reaction promoters in combination with at least one Lewis acid under certain reaction conditions to promote the formation of 2-halo-4,6-bisaryl-1,3,5-triazine compounds from cyanuric halide. Preferably, the Lewis acids and reaction promoters are combined to form a complex 2-Halo-4,6-bisaryl-1,3,5-triazines are key intermediates for making 2-(2-oxyaryl)-4,6-bisaryl-1,3,5-triazine class of UV absorbers.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: February 3, 2009
    Assignee: Cytec Technology Corp.
    Inventors: Ram B. Gupta, Dennis J Jakiela, Sampath Venimadhavan, Russell C Cappadona, Venkatrao K. Pai
  • Patent number: 6900314
    Abstract: It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at least one reaction promoter. This reaction is also unprecedently general as a variety of aromatics can be used to produce a wide selection of 2-halo-4,6-bisaryl-1,3,5-triazines. The novel approach includes the use of the reaction promoters in combination with at least one Lewis acid under certain reaction conditions to promote the formation of 2-halo-4,6-bisaryl-1,3,5-triazine compounds from cyanuric halide. Preferably, the Lewis acids and reaction promoters are combined to form a complex. 2-Halo-4,6-bisaryl-1,3,5-triazines are key intermediates for making 2-(2-oxyaryl)-4,6-bisaryl-1,3,5-triazine class of UV absorbers.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: May 31, 2005
    Assignee: Cytec Technology Corp.
    Inventors: Ram B. Gupta, Dennis J. Jakiela, Sampath Venimadhavan, Russell C. Cappadona, Venkatrao K. Pai
  • Patent number: 6867250
    Abstract: The invention relates generally to pyrimidines and triazines ultraviolet light absorbers containing a phenolic aromatic group(s) and a non-phenolic aromatic group(s) and the use thereof to protect against degradation by environmental forces, inclusive of ultraviolet light, actinic radiation, oxidation, moisture, atmospheric pollutants, and combinations thereof. The new class of pyrimidines and triazines includes two (one) non-phenolic aromatic groups with hydrocarbyl groups that are ortho to each other and one (two) resorcinol or substituted resorcinol group attached to a triazine or pyrimidine ring. The pyrimidines and triazines may be included in a polymeric structure. A method for stabilizing a material by incorporating the novel pyrimidines and triazines is also disclosed.
    Type: Grant
    Filed: October 30, 2000
    Date of Patent: March 15, 2005
    Assignee: Cytec Technology Corp.
    Inventors: Ram B. Gupta, Hargurpreet Singh, Russell C. Cappadona, Mark Paterna, Al Wagner
  • Publication number: 20040204585
    Abstract: It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at least one reaction promoter. This reaction is also unprecedently general as a variety of aromatics can be used to produce a wide selection of 2-halo-4,6-bisaryl-1,3,5-triazines. The novel approach includes the use of the reaction promoters in combination with at least one Lewis acid under certain reaction conditions to promote the formation of 2-halo-4,6-bisaryl-1,3,5-triazine compounds from cyanuric halide. Preferably, the Lewis acids and reaction promoters are combined to form a complex. 2-Halo-4,6-bisaryl-1,3,5-triazines are key intermediates for making 2-(2-oxyaryl)-4,6-bisaryl-1,3,5-triazine class of UV absorbers.
    Type: Application
    Filed: April 30, 2004
    Publication date: October 14, 2004
    Inventors: Ram B. Gupta, Dennis J. Jakiela, Sampath Venimadhavan, Russell C. Cappadona, Venkatrao K. Pai
  • Patent number: 6730785
    Abstract: It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at least one reaction promoter. This reaction is also unprecedently general as a variety of aromatics can be used to produce a wide selection of 2-halo-4,6-bisaryl-1,3,5-triazines. The novel approach includes the use of the reaction promoters in combination with at least one Lewis acid under certain reaction conditions to promote the formation of 2-halo-4,6-bisaryl-1,3,5-triazine compounds from cyanuric halide. Preferably, the Lewis acids and reaction promoters are combined to form a complex. 2-Halo-4,6-bisaryl-1,3,5-triazines are key intermediates for making 2-(2-oxyaryl)-4,6-bisaryl-1,3,5-triazine class of UV absorbers.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: May 4, 2004
    Assignee: Cytec Technology Corp.
    Inventors: Ram B. Gupta, Dennis J. Jakiela, Sampath Venimadhavan, Russell C. Cappadona, Venkatrao K. Pai
  • Patent number: 6710177
    Abstract: It has been now surprisingly discovered after extensive research that 2-halo-4,6-bisaryl-1,3,5-triazine can be prepared with unprecedented selectivity, efficiency, mild conditions, and in high yield by the reaction of cyanuric halide with aromatics in the presence of at least one Lewis acid and at least one reaction promoter. This reaction is also unprecedently general as a variety of aromatics can be used to produce a wide selection of 2-halo-4,6-bisaryl-1,3,5-triazines. The novel approach includes the use of the reaction promoters in combination with at least one Lewis acid under certain reaction conditions to promote the formation of 2-halo-4,6-bisaryl-1,3,5-triazine compounds from cyanuric halide. Preferably, the Lewis acids and reaction promoters are combined to form a complex. 2-Halo-4,6-bisaryl-1,3,5-triazines are key intermediates for making 2-(2-oxyaryl)-4,6-bisaryl-1,3,5-triazine class of UV absorbers.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: March 23, 2004
    Assignee: Cytec Technology Corp.
    Inventors: Ram B. Gupta, Dennis J. Jakiela, Sampath Venimadhavan, Russell C. Cappadona, Venkatrao K. Pai
  • Patent number: 6696570
    Abstract: Oligomeric compounds and methods of making the compound having the formula: T—&Parenopenst;E—F&Parenclosest;i—&Parenopenst;E—F′&Parenclosest;j—&Parenopenst;E′—F&Parenclosest;k—&Parenopenst;E′—F′&Parenclosest;l—S  (II) wherein i, j, k, and l are integers from about 0 to 300 and the sum of i, j, k, and l is greater than 2, wherein the units F, F′ and T are derived from one or more multi-functional carbonyl compounds of general structure DO—CO—CRaRb—(—CRcRd—)n—NH—(Y)m—CO—OD  (IV) wherein n is an integer from 1 to 15, m is either 0 or 1; Ra, Rb, Rc, and Rd, are each a hydrogen or a hydrocarbyl group; Y is CO—(CReRf)p, wherein Re and Rf are each a hydrogen or hydrocarbyl group and p is zero or an integer from 1 to 20 or CO—C6H4—, wherein the substitution pattern on the phenylene group is an ortho, meta, or para substitution pattern, and
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: February 24, 2004
    Assignee: Cytec Technology Corp.
    Inventors: Thomas P. Sassi, Ram. B. Gupta
  • Publication number: 20040026804
    Abstract: The current invention, Supercritical Antisolvent Precipitation with Enhanced Mass Transfer (SAS-EM) provides a significantly improved method for the production of nano and micro-particles with a narrow size distribution. The processes of the invention utilize the properties of supercritical fluids and also the principles of virbrational atomization to provide an efficient technique for the effective nanonization or micronization of particles. Like the SAS technique, SAS-EM, also uses a supercritical fluid as the antisolvent, but in the present invention the dispersion jet is deflected by a vibrating surface that atomizes the jet into fine droplets. The vibrating surface also generates a vibrational flow field within the supercritical phase that enhances mass transfer through increased mixing. Sizes of the particles obtained by this technique are easily controlled by changing the vibration intensity of the deflecting surface, which in turn is controlled by adjusting the power input to the vibration source.
    Type: Application
    Filed: June 16, 2003
    Publication date: February 12, 2004
    Applicant: Auburn University
    Inventors: Ram B. Gupta, Pratibhash Chattopadhyay
  • Patent number: 6620351
    Abstract: The current invention, Supercritical Antisolvent Precipitation with Enhanced Mass Transfer (SAS-EM) provides a significantly improved method for the production of nano and micro-particles with a narrow size distribution. The processes of the invention utilize the properties of supercritical fluids and also the principles of virbrational atomization to provide an efficient technique for the effective nanonization or micronization of particles. Like the SAS technique, SAS-EM, also uses a supercritical fluid as the antisolvent, but in the present invention the dispersion jet is deflected by a vibrating surface that atomizes the jet into fine droplets. The vibrating surface also generates a vibrational flow field within the supercritical phase that enhances mass transfer through increased mixing. Sizes of the particles obtained by this technique are easily controlled by changing the vibration intensity of the deflecting surface, which in turn is controlled by adjusting the power input to the vibration source.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: September 16, 2003
    Assignee: Auburn University
    Inventors: Ram B. Gupta, Pratibhash Chattopadhyay