Patents by Inventor Stephen D. Bryant

Stephen D. Bryant 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: 8784613
    Abstract: A method is provided for controlling organic contaminants, such as xylans, pitch or both, that interfere with bleaching of fibers and/or cause other interference(s) in papermaking systems. The method includes contacting fibers before any bleaching thereof with a composition which contains a hemicellulolytic enzyme and an organic contaminant removal adjuvant to liberate the organic contaminants from the fibers. The treated fibers can then be bleached and further used, for example, in making paper. The present invention also relates to the treatment compositions and to paper products made with fiber materials treated with these compositions. A method of enhancing enzymatic degradation of a substrate as well as formulations and systems for achieving the same are also provided. Various substrates can be degraded or otherwise processed, including biomass, paper mill sludge, and animal hides. Enzymatic degradation can be enhanced by including one or more polymeric surfactants.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: July 22, 2014
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Stephen D. Bryant, Kevin J. MacDonald, Bernard Janse, Xiangdong Zhou, Philip Hoekstra, Daniel E. Glover
  • Publication number: 20140069599
    Abstract: A method is provided for controlling organic contaminants, such as xylans, pitch or both, that interfere with bleaching of fibers and/or cause other interference(s) in papermaking systems. The method includes contacting fibers before any bleaching thereof with a composition which contains a hemicellulolytic enzyme and an organic contaminant removal adjuvant to liberate the organic contaminants from the fibers. The treated fibers can then be bleached and further used, for example, in making paper. The present invention also relates to the treatment compositions and to paper products made with fiber materials treated with these compositions. A method of enhancing enzymatic degradation of a substrate as well as formulations and systems for achieving the same are also provided. Various substrates can be degraded or otherwise processed, including biomass, paper mill sludge, and animal hides. Enzymatic degradation can be enhanced by including one or more polymeric surfactants.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: Buckman Laboratories International, Inc.
    Inventors: Stephen D. Bryant, Kevin J. MacDonald, Bernard Janse, Xiangdong Zhou, Philip Hoekstra, Daniel E. Glover
  • Patent number: 8652301
    Abstract: A method is provided for controlling organic contaminants, such as xylans, pitch or both, that interfere with bleaching of fibers and/or cause other interference(s) in papermaking systems. The method includes contacting fibers before any bleaching thereof with a composition which contains a hemicellulolytic enzyme and an organic contaminant removal adjuvant to liberate the organic contaminants from the fibers. The treated fibers can then be bleached and further used, for example, in making paper. The present invention also relates to the treatment compositions and to paper products made with fiber materials treated with these compositions. A method of enhancing enzymatic degradation of a substrate as well as formulations and systems for achieving the same are also provided. Various substrates can be degraded or otherwise processed, including biomass, paper mill sludge, and animal hides. Enzymatic degradation can be enhanced by including one or more polymeric surfactants.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: February 18, 2014
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Stephen D. Bryant, Kevin J. MacDonald, Bernard Janse, Xiangdong Zhou, Philip Hoekstra, Daniel E. Glover
  • Patent number: 7772156
    Abstract: Microbicidal compositions including (a) cyanodithiocarbimate and (b) an N-alkyl heterocyclic compound; a triazole compound or salt thereof or metal complex thereof; a microbicide with an activated halogen atom or a formaldehyde releasing compound; 1,4-bis(bromoacetoxy)-2-butene; 2-(thiocyanomethylthio)benzothiazole; a methylene-bis(thiocyanate); a halogenated acetophenone; a halopropynl compound; an iodosulfone; a phenol; a halocyanoacetamide compound and/or a quaternary ammonium compound are described. Components (a) and (b) can be present in a synergistically effective amount to control the growth of at least one microorganism. Methods for controlling the growth of microorganisms with the compositions are also disclosed.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: August 10, 2010
    Assignee: Buckman Laboratories International, Inc.
    Inventor: Stephen D. Bryant
  • Publication number: 20080102094
    Abstract: Microbicidal compositions including (a) cyanodithiocarbimate and (b) an N-alkyl heterocyclic compound; a triazole compound or salt thereof or metal complex thereof; a microbicide with an activated halogen atom or a formaldehyde releasing compound; 1,4-bis(bromoacetoxy)-2-butene; 2-(thiocyanomethylthio)benzothiazole; a methylene-bis(thiocyanate); a halogenated acetophenone; a halopropynl compound; an iodosulfone; a phenol; a halocyanoacetamide compound and/or a quaternary ammonium compound are described. Components (a) and (b) can be present in a synergistically effective amount to control the growth of at least one microorganism. Methods for controlling the growth of microorganisms with the compositions are also disclosed.
    Type: Application
    Filed: November 1, 2006
    Publication date: May 1, 2008
    Inventor: Stephen D. Bryant
  • Patent number: 7157017
    Abstract: The invention relates to control fungal growth on tanned hides, using cyanodithiocarbimates of formula (I): X is a halogen; R is a substituted or unsubstituted C1–C14 alkyl group, a substituted or unsubstituted C2–C14 alkenyl group, a substituted or unsubstituted C2–C14 alkynyl group, a substituted or unsubstituted group defined by Y—Ar—(CH2)m— or by Z—(CH2)n—; Ar is a substituted or unsubstituted aryl group selected from phenyl, or naphthyl; Y is H, halogen, NO2, R1, R1O, R1R2N; Z is NC, R1O, R1OC(O), R1OCH2CH2(OCH2CH2)p m ranges from 0 to 3; n ranges from 0 to 3; p ranges from 0 to 3; and R1 and R2 are independently H, substituted or unsubstituted C1–C5 alkyl.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: January 2, 2007
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Joseph G. E. Fenyes, Thomas E. McNeel, Stephen D. Bryant, Marilyn S. Whittemore, Zoltan G. Csuros, Mark L. Zollinger, Robert H. Miller, Naim B. Miguel
  • Patent number: 6380182
    Abstract: The invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one sulfamic acid or salt thereof to inhibit bacterial adhesion to the submergible surface. The invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one sulfamic acid or salt thereof to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The sulfamic acid used in the method of the invention has the formula R1R2NS(O)2(OH). In this formula, R1 and R2 are independently a hydrogen, a C4-C20 alkyl group or a cyclohexyl group. However, R1 and R 2 are not both hydrogen.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: April 30, 2002
    Inventors: Thomas E. McNeel, Marilyn S. Whittemore, Stephen D. Bryant, Graciela H. Vunk
  • Patent number: 6211172
    Abstract: The present invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one sulfonamide to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one sulfonamide to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The sulfonamide used in the method of the invention has the following formula: The present invention also relates to a composition containing the sulfonamides and useable in the above methods. The compositions comprise at least one sulfonamide in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: April 3, 2001
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Mark L. Zollinger, Daniel E. Glover, Marilyn S. Whittemore, Stephen D. Bryant
  • Patent number: 6110452
    Abstract: The present invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one polyglycol fatty acid ester to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one polyglycol fatty acid ester to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The present invention also relates to a composition containing polyglycol fatty acid esters and useable in the above methods. The compositions comprise at least one polyglycol fatty acid ester in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: August 29, 2000
    Assignee: Buckman Laboratories International Inc
    Inventors: Daniel E. Glover, Marilyn S. Whittemore, Stephen D. Bryant
  • Patent number: 6103131
    Abstract: The invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one sulfamic acid or salt thereof to inhibit bacterial adhesion to the submergible surface. The invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one sulfamic acid or salt thereof to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The sulfamic acid used in the method of the invention has the formula R.sup.1 R.sup.2 NS(O).sub.2 (OH). In this formula, R.sup.1 and R.sup.2 are independently a hydrogen, a C.sub.4 -C.sub.20 alkyl group or a cyclohexyl group. However, R.sup.1 and R.sup.2 are not both hydrogen. Alternatively, R.sup.1 and R.sup.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: August 15, 2000
    Assignee: Buckman Laboratories International Inc.
    Inventors: Thomas E. McNeel, Marilyn S. Whittemore, Stephen D. Bryant, Graciela H. Vunk
  • Patent number: 6075022
    Abstract: The present invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one thiourea to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one thiourea to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the bactaria. The thiourea used in the method of the invention has the following formula a compound of the formula: The present invention also relates to compositions containing thiourea compounds and useable in the above methods. The compositions comprise at least one thiourea in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: June 13, 2000
    Assignee: Buckman Laboratories International Inc.
    Inventors: Mark L. Zollinger, Stephen D. Bryant
  • Patent number: 6030971
    Abstract: The present invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one amide to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one amide to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the bacteria. The amide used in the method of the invention has the following formula: ##STR1## The present invention also relates to compositions containing amides and useable in the above methods. The compositions comprise at least one amide in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: February 29, 2000
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Marilyn S. Whittemore, Daniel E. Glover, Mark L. Zollinger, Stephen D. Bryant
  • Patent number: 5902808
    Abstract: The present invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one N-alkyl heterocyclic compound to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one N-alkyl heterocyclic compound to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The N-alkyl heterocyclic compound used in the method of the invention has the following formula: ##STR1## The substituent R.sup.1 is a C.sub.8 -C.sub.20 alkyl group. The heterocyclic ring is a 5-8 membered heterocyclic ring where X is O, NH, or CH.sub.2. R.sup.2 is methyl, hydroxymethyl, or hydroxyethyl. The integer n ranges from 0 to 3.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: May 11, 1999
    Assignee: Buckman Laboratories International Inc.
    Inventors: Marilyn S. Whittemore, Daniel E. Glover, Joe C. Steelhammer, Stephen D. Bryant
  • Patent number: 5888405
    Abstract: The invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one amino methyl phosphonic acid or salt thereof to inhibit bacterial adhesion to the submergible surface. The invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one amino methyl phosphonic acid or salt thereof to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the fouling organisms. The amino methyl phosphonic acid used in the methods of the invention has the formula R.sup.1 R.sup.2 NCH.sub.2 P(O)(OH).sub.2. In this formula, R.sup.1 and R.sup.2 are independently a C.sub.6 -C.sub.20 alkyl group or a CH.sub.2 P(O)(OH).sub.2 group. However, R.sup.1 and R.sup.2 are not both a CH.sub.2 P(O)(OH).sub.2 group. Alternatively, R.sup.1 and R.sup.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: March 30, 1999
    Assignee: Buckman Laboratories International Inc.
    Inventors: Thomas E. McNeel, Marilyn S. Whittemore, Stephen D. Bryant, Graciela H. Vunk
  • Patent number: 5879623
    Abstract: The present invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one fluorosurfactant to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one fluorosurfactant to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the bacteria fouling organisms. The fluorosurfactant used in the method of the invention is an anionic or nonionic fluorosurfactant selected from: R.sub.f CH.sub.2 CH.sub.2 SCH.sub.2 CH.sub.2 CO.sub.2 Li, (R.sub.f CH.sub.2 CH.sub.2 O)P(O) (ONH.sub.4).sub.2, (R.sub.f CH.sub.2 CH.sub.2 O).sub.2 P(O) (ONH.sub.4), (R.sub.f CH.sub.2 CH.sub.2 O)P(O) (OH).sub.2, (R.sub.f CH.sub.2 CH.sub.2 O).sub.2 P(O) (OH), R.sub.f CH.sub.2 CH.sub.2 O (CH.
    Type: Grant
    Filed: December 27, 1995
    Date of Patent: March 9, 1999
    Assignee: Buckman Laboratories International Inc.
    Inventors: Daniel E. Glover, Joe C. Steelhammer, Stephen D. Bryant
  • Patent number: 5817696
    Abstract: The present invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one oxime ester to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one oxime ester to inhibit bacteria from adhering to a submerged surface within the aqueous system.. This method effectively controls biofouling without substantially killing the bacteria. The oxime ester used in the method of the invention has the following formula: ##STR1## The present invention also relates to compositions containing oxime esters and useable in the above methods. The compositions comprise at least one oxime ester in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: October 6, 1998
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Mark L. Zollinger, Stephen D. Bryant
  • Patent number: 5814668
    Abstract: The present invention relates to a method to inhibit bacteria from adhering to a submergible surface. The method contacts the submergible surface with an effective amount of at least one amide to inhibit bacterial adhesion to the submergible surface. The present invention also relates to a method for controlling biofouling of an aqueous system. This method adds an effective amount of at least one amide to inhibit bacteria from adhering to a submerged surface within the aqueous system. This method effectively controls biofouling without substantially killing the bacteria. The amide used in the method of the invention has the following formula: ##STR1## The present invention also relates to compositions containing amides and useable in the above methods. The compositions comprise at least one amide in an amount effective to inhibit bacteria from adhering to submergible or submerged surfaces.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: September 29, 1998
    Assignee: Buckman Laboratories International Inc.
    Inventors: Marilyn S. Whittemore, Daniel E. Glover, Mark L. Zollinger, Stephen D. Bryant
  • Patent number: 5518993
    Abstract: Pesticidal compositions for application to chlorophyl-containing algae or plants containing endothall or a salt thereof and at least one ethoxylated amine of formula I ##STR1## in which R.sub.1 is an alkyl group having 8 to 22 carbon atoms, and is saturated or unsaturated; and the poly(oxyethylene) content (x+y) is greater than 3 but less than or equal to 15. Also disclosed are methods of increasing the effectiveness of endothall or a salt thereof which comprises adding to the endothall or salt thereof an amount of an ethoxylated amine of formula I effective to increase the pesticidal activity of the endothall or salt thereof.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: May 21, 1996
    Assignee: Buckman Laboratories International, Inc.
    Inventors: James C. Lee, Stephen D. Bryant
  • Patent number: 5489569
    Abstract: Pesticidal and fertilizer compositions containing at least one compound of formula IR.sub.3 C(O)--N(R.sub.1)(R.sub.2) (I)wherein R.sub.1 is hydrogen or a substituted or unsubstituted C.sub.1 -C.sub.6 alkyl group; R.sub.2 is hydrogen or a substituted or unsubstituted C.sub.1 -C.sub.6 alkyl group; and R.sub.3 C(O)-- is a substituted or unsubstituted fatty acid residue of 8 to 22 carbon atoms are provided. A method of increasing the effectiveness of a pesticide which comprises applying a pesticide and an amount of a compound of formula I effective to increase the pesticidal activity of the pesticide is also provided. A method for increasing the effectiveness of a fertilizer which comprises applying to a plant in need thereof a fertilizer and an amount of a compound of formula I effective to increase the fertilizing activity of the fertilizer is also described.
    Type: Grant
    Filed: February 1, 1995
    Date of Patent: February 6, 1996
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Stephen D. Bryant, James C. Lee, M. Sheldon Ellis