Patents by Inventor Bret J. Chisholm

Bret J. Chisholm 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: 20250084190
    Abstract: Polymer compositions including a silylated polymer derived from a polydiene polymer modified with a grafting agent including a silyl group and polar functional group. The polymer compositions are rubber blends that can be cured, wherein the silylated polymers aid in providing cured products thereof, such as tires, with improved properties. Methods for preparing the compositions and cured products such as tire components.
    Type: Application
    Filed: December 29, 2022
    Publication date: March 13, 2025
    Inventors: Sem TAMANG, Shammi AHMED, Bret J. CHISHOLM
  • Publication number: 20250084108
    Abstract: Silylating grafting agents and methods for synthesizing the same. The grafting agents are used to produce functionalized polydiene polymers by modifying the backbone of the polymer. Methods for functionalizing a polydiene post-polymerization using hydrosilylation are described. Hydrosilylation provides an advantage of incorporating multiple functional groups on the backbone of the polymer which lead to improved properties, such as rolling resistance, wet traction and polymer filler interaction.
    Type: Application
    Filed: December 29, 2022
    Publication date: March 13, 2025
    Inventors: Sem TAMANG, Bret J. CHISHOLM
  • Publication number: 20250066516
    Abstract: Embodiments of the present disclosure are directed to polymers, wherein the polymers comprise hydrogenated 1,4-polybutadiene having a cis content of about 50% to about 96%, a vinyl content of about 0% to about 1%, and a trans content of about 1% to about 10%. The hydrogenated 1, 4-polybutadiene has a degree of hydrogenation of about 3% to about 50%.
    Type: Application
    Filed: December 28, 2022
    Publication date: February 27, 2025
    Inventors: Ryan J. HUE, Rajith M. JAYASINHA ARACHCHIGE, Jeffrey M. MAGISTRELLI, Bret J. CHISHOLM
  • Publication number: 20220243052
    Abstract: Disclosed herein are polymeric blends suitable for use in non-pneumatic tires, processes for preparing the polymeric blends, and non-pneumatic tires and components thereof incorporating the polymeric blend. The polymeric blends include a thermoplastic polyester elastomer and a crosslinking compound.
    Type: Application
    Filed: May 18, 2020
    Publication date: August 4, 2022
    Applicant: Bridgestone Americas Tire Operations, LLC
    Inventors: Jared J. Griebel, Hyeonjae Kim, Bret J. Chisholm
  • Publication number: 20110042325
    Abstract: Efficient, targeted delivery of polymer entrapped nanoparticles, nutrients and microorganisms is provided by amphiphilic polysiloxane graft copolymers (APGC) based metal nanoparticle delivery vehicles configured to increase colloidal stability, reduce oxidation by non-target compounds, and have affinity towards water/contaminant interfaces.
    Type: Application
    Filed: March 6, 2009
    Publication date: February 24, 2011
    Applicant: NDSU RESEARCH FOUNDATION
    Inventors: Achintya N. Bezbaruah, Bret J. Chisholm, Sita Krajangpan
  • Publication number: 20080275170
    Abstract: Disclosed is a method of preparing treated metal oxide nanoparticles from sols prepared from metal alkoxides and organosilanes. The treated nanoparticles are useful high refractive index additives in the manufacture of optical articles.
    Type: Application
    Filed: December 11, 2006
    Publication date: November 6, 2008
    Inventor: Bret J. Chisholm
  • Patent number: 6437054
    Abstract: A thermoplastic resin composition comprises a compatible resin blend of a polyester sulfonate salt ionomer and a polyamide and at least one difunctional epoxy compound having at least one cyclohexane ring moiety and two terminal epoxy functional groups, wherein at least one of the two terminal epoxy functional groups is a substituent on the at least one cyclohexane ring moiety; and, optionally, a catalyst compound or rubber impact modifier.
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: August 20, 2002
    Assignee: General Electric Company
    Inventors: Bret J. Chisholm, Robert R. Gallucci, Josef H. P. Bastiaens
  • Publication number: 20020103294
    Abstract: A thermoplastic resin composition with enhanced elongation and good appearance comprising a compatible resin blend of a polyester sulfonate salt ionomer and a polyamide and an effective amount of at least one difunctional epoxy compound wherein the difunctional epoxy compound has at least one cyclohexane ring moiety and having two terminal epoxy functional groups, wherein at least one of the two terminal epoxy functional groups is a substituent on the at least one cyclohexane ring moiety; and optionally an effective amount of a catalyst compound or rubbery impact modifier.
    Type: Application
    Filed: February 17, 1999
    Publication date: August 1, 2002
    Inventors: BRET J. CHISHOLM, ROBERT R. GALLUCCI, JOSEF H.P. BASTIAENS
  • Patent number: 6300405
    Abstract: A thermoplastic resin composition comprising: (a) Alkylene aryl polyester copolymers having metal sulfonate units represented by the formula IA:  or the formula IB: (M+nO3S)d-A-(OR″OH)p where p=1-3, d=1-3, p+d=2-6, n=1-5, and A is an aryl group containing one or more aromatic rings where the sulfonate substituent is directly attached to an aryl ring, R″ is a divalent alkyl group and the metal sulfonate group is bound to the polyester through ester linkages; (b) glass fibers.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: October 9, 2001
    Assignee: General Electric Company
    Inventors: Bret J. Chisholm, William D. Richards
  • Publication number: 20010009944
    Abstract: A thermoplastic resin composition comprising:
    Type: Application
    Filed: June 30, 1998
    Publication date: July 26, 2001
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: BRET J. CHISHOLM, WILLIAM D. RICHARDS
  • Patent number: 5458796
    Abstract: The present invention is the synthesis of star polymers containing polyisobutylene (PIB) via the arm-first, core-last method. These polymers are superior in properties to known hydrogenated polyisoprene star-branched polymers due to their inherent lack of unsaturation.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: October 17, 1995
    Assignee: Shell Oil Company
    Inventors: Robson F. Storey, Donn A. Dubois, Dale L. Handlin, Jr., Bret J. Chisholm
  • Patent number: 5219948
    Abstract: Elastomeric polymers comprising polymerized alpha-olefins or conjugated alkadienes are produced by cationic polymerization in the presence of titanium tetrachloride and an electron pair donor selected from pyridine or a non-hindered alkylpyridine. The polymers have very narrow, mono-modal molecular weight distributions such a achived by anionic polymerization. Polymerization of each monomer is terminated prior to broadening of the molecular weight distribution which significantly detracts from polymer properties.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: June 15, 1993
    Assignee: University of Southern Mississippi
    Inventors: Robson F. Storey, Youngkwan Lee, Bret J. Chisholm