Patents by Inventor Tien-Feng Ling

Tien-Feng Ling 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: 10253214
    Abstract: The current method relates to compositions and methods for inhibiting the deposition of organic contaminants in pulp and papermaking systems. The current method also relates to controlling the deposition of organic contaminants on equipment in the pulp and papermaking systems, which can cause both quality and efficiency problems. In particular the method relates to the use of non-sulfonated or slightly sulfonated lignin dispersions and solutions for inhibiting deposition of contaminants in pulp and paper making system.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: April 9, 2019
    Assignee: SOLENIS TECHNOLOGIES, L.P.
    Inventors: Tien-Feng Ling, Zhaoqing Liu, Kyle J Bottorff
  • Publication number: 20170009100
    Abstract: The current method relates to compositions and methods for inhibiting the deposition of organic contaminants in pulp and papermaking systems. The current method also relates to controlling the deposition of organic contaminants on equipment in the pulp and papermaking systems, which can cause both quality and efficiency problems. In particular it relates to the use of non-sulfonated or slightly sulfonated lignin dispersions and solutions for inhibiting deposition of contaminants in pulp and paper making system.
    Type: Application
    Filed: June 24, 2016
    Publication date: January 12, 2017
    Inventors: Tien-Feng Ling, Zhaoqing Liu, Kyle J. Bottorff
  • Patent number: 8865263
    Abstract: Compositions and methods for reduction in adhesion between wet paper web and roll surfaces in papermaking process are disclosed. The method is particularly useful for improvements in press section roll release.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: October 21, 2014
    Assignee: Solenis Technologies, L.P.
    Inventors: Davit E. Sharoyan, Tien-Feng Ling, Scott T. Schnelle
  • Patent number: 8524042
    Abstract: A method for inhibiting resinous and sticky substances from filling or forming deposits on or within papermaking forming wire, by applying to said wire an effective inhibiting amount of a composition comprising at least one cationic agent selected from the group consisting of (a) cationic polyureas, (b) hydrophobically modified cationic polymers, (c) alkylammonium or/and alkylimidazolium salts, and optionally at least one nonionic amphiphilic copolymer selected from (i) hydrophobically modified polyethylene glycols], (ii) hydrophobically modified cellulose ethers, (iii) copolymers of vinyl alcohol and vinyl alkonate, (iv) polyoxyalkylene block copolymers, and (v) hydrophilically modified polydimethylsiloxanes.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: September 3, 2013
    Assignee: Hercules Incorporated
    Inventors: Fushan Zhang, Tien-Feng Ling
  • Publication number: 20120043040
    Abstract: A method for inhibiting resinous and sticky substances from filling or forming deposits on or within papermaking forming wire, by applying to said wire an effective inhibiting amount of a composition comprising at least one cationic agent selected from the group consisting of (a) cationic polyureas, (b) hydrophobically modified cationic polymers, (c) alkylammonium or/and alkylimidazolium salts, and optionally at least one nonionic amphiphilic copolymer selected from (i) hydrophobically modified polyethylene glycols], (ii) hydrophobically modified cellulose ethers, (iii) copolymers of vinyl alcohol and vinyl alkonate, (iv) polyoxyalkylene block copolymers, and (v) hydrophilically modified polydimethylsiloxanes.
    Type: Application
    Filed: August 22, 2011
    Publication date: February 23, 2012
    Inventors: Fushan Zhang, Tien-Feng Ling
  • Publication number: 20120045587
    Abstract: Compositions and methods for reduction in adhesion between wet paper web and roll surfaces in papermaking process are disclosed. The method is particularly useful for improvements in press section roll release.
    Type: Application
    Filed: August 22, 2011
    Publication date: February 23, 2012
    Inventors: Davit E. Sharoyan, Tien-Feng Ling, Scott T. Schnelle
  • Publication number: 20020094299
    Abstract: A composition including at least one of polyvalent metal silicate and polyvalent metal carbonate and at least one protein. A weight ratio of the at least one polyvalent metal silicate and polyvalent metal carbonate to the at least one protein is from about 50:1 to 1:1.
    Type: Application
    Filed: October 30, 2001
    Publication date: July 18, 2002
    Applicant: HERCULES INCORPORATED
    Inventors: Duy T. Nguyen, Mitzi K. Fader, Xiang Huai Wang, Fushan Zhang, Tien-Feng Ling
  • Publication number: 20020071783
    Abstract: A composition including ground calcium carbonate and sodium montmorillonite. A composition including magnesium aluminum silicate and sodium montmorillonite. An aqueous pulp slurry, including wood pulp, metal cations, anions, and about 50 to 500 ppm of an anti-scalant comprised of at least one of magnesium aluminum silicate, hydrated magnesium aluminum silicate, saponite, sepiolite, calcium carbonate, magnesium carbonate, ferrous carbonate, manganese carbonate, dolomite, hectorite, amorphous magnesium silicate, and zinc carbonate.
    Type: Application
    Filed: October 30, 2001
    Publication date: June 13, 2002
    Applicant: HERCULES INCORPORATED
    Inventors: Mitzi K. Fader, Duy T. Nguyen, Xiang Huai Wang, Fushan Zhang, Tien-Feng Ling
  • Patent number: 6365101
    Abstract: Method for inhibiting scale deposits in an aqueous system. The method may include at least one of adding and forming anti-scalant in the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 1000 ppm, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate, wherein the aqueous system has a pH of at least about 9, and wherein a mean particle size of the anti-scalant is less than about 3 microns. The method may also include at least one of adding and forming anti-scalant in the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 1000 ppm, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate, and wherein the aqueous system has a pH of at least about 9; and adding dispersant to the aqueous system.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: April 2, 2002
    Assignee: Hercules Incoporated
    Inventors: Duy T. Nguyen, Mitzi K. Fader, Xiang Huai Wang, Fushan Zhang, Tien-Feng Ling
  • Patent number: 6355214
    Abstract: Method for inhibiting scale deposits in an aqueous system. The method may include adding anti-scalant to the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 500 ppm, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate, and wherein the aqueous system has a pH of at least about 9. The method may include adding anti-scalant to the aqueous system such that an amount of anti-scalant in the aqueous system is up to about 500 ppm, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate, in the presence of up to about 0.4 ppm of cationic polymer. The method may include adding anti-scalant to the aqueous system at at least one of before a pulping digester and at a pulping digester, such that an amount of anti-scalant in the aqueous system is up to about 500 ppm, wherein the anti-scalant comprises at least one of polyvalent metal silicate and polyvalent metal carbonate.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: March 12, 2002
    Assignee: Hercules Incorporated
    Inventors: Mitzi K. Fader, Duy T. Nguyen, Xiang Huai Wang, Fushan Zhang, Tien-Feng Ling
  • Patent number: 6150452
    Abstract: The present invention provides for methods and compositions for removing stickies and pitch from papermaking fiber by first chemically treating the papermaking fiber with a composition of at least two of an oil-soluble or water-dispersible hydrophobic polymer, an oil soluble or water-dispersible surfactant having an HLB of about 1 to about 10, a tackifier, and an oil soluble or water-dispersible solvent then mechanically separating the agglomerated stickies and pitch from the papermaking fiber.
    Type: Grant
    Filed: May 24, 1999
    Date of Patent: November 21, 2000
    Assignee: BetzDearborn Inc.
    Inventors: Tien-Feng Ling, William F. Scholz
  • Patent number: 5936024
    Abstract: The present invention provides for methods and compositions for removing stickies and pitch from papermaking fiber by first chemically treating the papermaking fiber with a composition of at least two of an oil-soluble or water-dispersible hydrophobic polymer, an oil soluble or water-dispersible surfactant having an HLB of about 1 to about 10, a tackifier, and an oil soluble or water-dispersible solvent then mechanically separating the agglomerated stickies and pitch from the papermaking fiber.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: August 10, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Tien-Feng Ling, William F. Scholz
  • Patent number: 5885419
    Abstract: Methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. Albumins, globulins or blends thereof and spray-dried animal blood cells are added to the pulp or sprayed onto deposition prone surfaces of a papermaking system suffering from organic contaminants.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: March 23, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Duy T. Nguyen, Tien-Feng Ling
  • Patent number: 5746888
    Abstract: Methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. Albumins, globulins or blends thereof and spray-dried animal blood cells are added to the pulp or sprayed onto deposition prone surfaces of a papermaking system suffering from organic contaminants.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: May 5, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Duy T. Nguyen, Tien-Feng Ling
  • Patent number: 5556510
    Abstract: A method of inhibiting the deposition of organic contaminants in a pulp and papermaking system comprising adding to the system an effective amount of a detackifying composition comprising a charged polymer and an oppositely charged surfactant, with the proviso that at least the polymer or the surfactant be surface active.
    Type: Grant
    Filed: April 25, 1995
    Date of Patent: September 17, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: David D. Dreisbach, Mark E. Laurint, Tien-Feng Ling
  • Patent number: 5250152
    Abstract: A method for enhancing the penetration of cooking liquor into wood chips to form a Kraft pulp which comprises adding to the cooking liquor specific surfactants such as ethoxylated dialkylphenols and ethoxylated alcohols.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: October 5, 1993
    Assignee: Betz PaperChem, Inc.
    Inventors: Tien-Feng Ling, Theresa D. Hancock
  • Patent number: 5139616
    Abstract: In a papermaking operation which utilizes secondary fiber furnish containing hot melt or pressure sensitive adhesive contaminants, a method of inhibiting stickies comprising adding to the pulp slurry at least one surfactant selected from the group consisting of fatty alkanolamides and ethoxylated compounds in addition to a hydrocarbon solvent.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: August 18, 1992
    Assignee: Betz PaperChem, Inc.
    Inventor: Tien-Feng Ling