Patents by Inventor Yih-Fang Chen

Yih-Fang Chen 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).

  • Porous friction material with nanoparticles of friction modifying material
    Patent number: 8603614
    Abstract: A friction material which includes a porous base material, at least one type of resin material, and at least one type of nanoparticle-sized friction modifying particle is disclosed. The resin material is substantially uniformly dispensed throughout the base material and a non-continuous layer of a predetermined amount of the nanoparticle-sized friction modifying materials forms a porous top surface on the base material.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: December 10, 2013
    Assignee: BorgWarner Inc.
    Inventors: Robert C. Lam, Yih-Fang Chen, Kenji Maruo
  • Carbon friction materials
    Patent number: 8394452
    Abstract: Sintered, carbon friction materials are made from fibrous materials that are impregnated with resins prior to sintering. Preferably, non-woven fibrous materials are impregnated with phenolic resin and sintered at 400 to 8000 C. The resulting material has an open porosity above 50 percent by volume.
    Type: Grant
    Filed: October 31, 2006
    Date of Patent: March 12, 2013
    Assignee: BorgWarner Inc.
    Inventors: Feng Dong, Robert C. Lam, Yih-Fang Chen
  • Carbon Friction Materials
    Publication number: 20100304631
    Abstract: Sintered, carbon friction materials are made from fibrous materials that are impregnated with resins prior to sintering. Preferably, non-woven fibrous materials are impregnated with phenolic resin and sintered at 400 to 8000 C. The resulting material has an open porosity above 50 percent by volume.
    Type: Application
    Filed: October 31, 2006
    Publication date: December 2, 2010
    Applicant: BORGWARNER INC.
    Inventors: Feng Dong, Robert C. Lam, Yih Fang Chen
  • Porous friction material comprising nanoparticles of friction modifying material
    Patent number: 7749562
    Abstract: A method of making a friction material which includes a porous base material, at least one type of resin material, and at least one type of nanoparticle-sized friction modifying particle, is disclosed. The resin material and the nanoparticle-sized friction modifying particles are substantially uniformly dispensed throughout the base material.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: July 6, 2010
    Assignee: BorgWarner Inc.
    Inventors: Robert C. Lam, Yih-Fang Chen, Kenji Maruo
  • Porous friction material comprising nanoparticles of friction modifying material
    Patent number: 7429418
    Abstract: A friction material which includes a porous base material, at least one type of resin material, and at least one type of nanoparticle-sized friction modifying particle, is disclosed. The resin material and the nanoparticle-sized friction modifying particles are substantially uniformly dispensed throughout the base material.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: September 30, 2008
    Assignee: BorgWarner, Inc.
    Inventors: Robert C. Lam, Yih-Fang Chen, Kenji Maruo
  • Friction material with nanoparticles of friction modifying layer
    Patent number: 7294388
    Abstract: A friction material which includes a base material, at least one type of resin material, and at least one type of nanoparticle-sized friction modifying particle is disclosed.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: November 13, 2007
    Assignee: BorgWarner Inc.
    Inventors: Robert C. Lam, Yih-Fang Chen, Kenji Maruo
  • Porous friction material with nanoparticles of friction modifying material
    Publication number: 20060019080
    Abstract: A friction material which includes a porous base material, at least one type of resin material, and at least one type of nanoparticle-sized friction modifying particle is disclosed. The resin material is substantially uniformly dispensed throughout the base material and a non-continuous layer of a predetermined amount of the nanoparticle-sized friction modifying materials forms a porous top surface on the base material.
    Type: Application
    Filed: July 26, 2004
    Publication date: January 26, 2006
    Inventors: Robert Lam, Yih-Fang Chen, Kenji Maruo
  • Porous friction material comprising nanoparticles of friction modifying material
    Publication number: 20060019085
    Abstract: A friction material which includes a porous base material, at least one type of resin material, and at least one type of nanoparticle-sized friction modifying particle, is disclosed. The resin material and the nanoparticle-sized friction modifying particles are substantially uniformly dispensed throughout the base material.
    Type: Application
    Filed: July 26, 2004
    Publication date: January 26, 2006
    Inventors: Robert Lam, Yih-Fang Chen, Kenji Maruo
  • Porous friction material with friction modifying layer
    Publication number: 20060008635
    Abstract: A friction material which includes a porous base material, at least one type of resin material, and at least one type of friction modifying particle is disclosed. The resin material is substantially uniformly dispensed throughout the base material and a layer of a predetermined amount of the friction modifying materials forms a porous top surface on the base material.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 12, 2006
    Inventors: Feng Dong, Robert Lam, Yih-Fang Chen, Bulent Chavdar
  • Saturant for friction material containing friction modifying layer
    Publication number: 20060009541
    Abstract: The present invention relates to a saturant for a base material comprising at least one type of curable resin material and at least one type of friction modifying material. The resin material and the friction modifying material form a matrix such that the resin material is substantially uniformly dispensed throughout the base material while a desired high amount of the friction modifying materials are coated.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 12, 2006
    Inventors: Yih-Fang Chen, Robert Lam, Feng Dong, Robert Denes, Bulent Chavdar
  • Friction material with friction modifying layer having symmetrical geometric shapes
    Patent number: 6875711
    Abstract: A friction material has a first layer of a base material and a second layer of at least one type of friction modifying particle having substantially symmetrical geometric shapes on a top surface of the base material. The second layer has an average thickness of about 30 to about 200 microns and the surface area coverage of about 80 to about 100% such that the top layer has a fluid permeability lower than the first layer.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: April 5, 2005
    Assignee: BorgWarner Inc.
    Inventors: Yih-Fang Chen, Robert C. Lam, Feng Dong, Bulent Chavdar
  • Friction material with friction modifying layer having symmetrical geometric shapes
    Publication number: 20040043243
    Abstract: A friction material has a first layer of a base material and a second layer of at least one type of friction modifying particle having substantially symmetrical geometric shapes on a top surface of the base material. The second layer has an average thickness of about 30 to about 200 microns and the surface area coverage of about 80 to about 100% such that the top layer has a fluid permeability lower than the first layer.
    Type: Application
    Filed: September 4, 2002
    Publication date: March 4, 2004
    Inventors: Yih-Fang Chen, Robert C. Lam, Feng Dong, Bulent Chavdar
  • Friction material with friction modifying layer
    Publication number: 20040043193
    Abstract: A friction material has a first layer of a fibrous base material and a second layer of at least one type of friction modifying particle on a top surface of the fibrous base material. The second layer has an average thickness of about 30-200 &mgr;m and a surface coverage of about 80% to about 100%, such that the top layer has a permeability lower than the first layer.
    Type: Application
    Filed: August 30, 2002
    Publication date: March 4, 2004
    Inventors: Yih-Fang Chen, Robert C. Lam, Feng Dong, Bulent Chavdar
  • Friction material with nanoparticles of friction modifying layer
    Publication number: 20040033341
    Abstract: A friction material which includes a base material, at least one type of resin material, and at least one type of nanoparticle-sized friction modifying particle is disclosed.
    Type: Application
    Filed: August 13, 2002
    Publication date: February 19, 2004
    Inventors: Robert C. Lam, Yih-Fang Chen, Kenji Maruo
  • Friction material formed by deposition of friction modifiers on high, wet energy carbonaceous friction materials
    Patent number: 6630416
    Abstract: he present invention relates to a fibrous base material having a primary layer and a secondary layer of friction modifying particles on at least one surface of the primary layer for use as an anti-shudder friction material. The fibrous base material is impregnated with a phenolic or phenolic-based resin material to form a friction material.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: October 7, 2003
    Assignee: BorgWarner Inc.
    Inventors: Robert C. Lam, Yih Fang Chen
  • Fibrous lining material comprising a primary layer having less fibrillated aramid fibers and synthetic graphite and a secondary layer comprising carbon particles
    Patent number: 5998307
    Abstract: The present invention relates to a fibrous base material comprising a primary layer of less fibrillated aramid fibers, synthetic graphite and at least one filler material, and a secondary layer of carbon particles on at least one surface of the fibrous base material for use in a non-asbestos friction material. In certain embodiments, the fibrous base material is impregnated with a phenolic or phenolic-based resin material, including, for example, a mixture of a phenolic resin and a silicone resin to form a friction material having good "break-in" and durability characteristics.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: December 7, 1999
    Assignee: Borg-Warner Autotive, Inc.
    Inventors: Robert C. Lam, Marc A. Yesnik, Yih-Fang Chen
  • Carbon deposit friction lining material
    Patent number: 5958507
    Abstract: The present invention relates to a friction material comprising a fibrous base material primary layer of less fibrillated aramid fibers, synthetic graphite and at least one filler material, and a secondary layer of a mixture of carbon particles and at least one retention aid coated on at least one surface of the primary layer. In certain embodiments, the fibrous base material is impregnated with a phenolic or phenolic-based resin material, including, for example, a mixture of a phenolic resin and a silicone resin to form a friction material having high heat resistance and high friction durability characteristics.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: September 28, 1999
    Assignee: Borg-Warner Automotive, Inc.
    Inventors: Robert C. Lam, Yih-Fang Chen
  • Plate and facing assembly
    Patent number: 5878860
    Abstract: A plate and facing assembly (10), including a plate (12) and a facing (14) mounted on the plate. The facing (14) defines a substantially circular outer groove (20) and a substantially circular inner groove (22) spaced from the outer groove. The facing (14) defines a waved groove (24) between the outer and inner grooves (20, 22). The outer, inner and waved grooves (20, 22, 24) are interconnected by a plurality of flow grooves (28, 30, 32) defined by the facing (14). The grooves (20, 22, 24) interact to channel the flow of fluid.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: March 9, 1999
    Assignee: Borg-Warner Automotive, Inc.
    Inventors: Nirmal Pavangat, Abdul-Hafiz Afaneh, Kenneth C. Yuergens, Yih-Fang Chen
  • Fibrous lining material comprising a primary layer having less fibrillated aramid fibers and synthetic graphite and a secondary layer comprising carbon particles
    Patent number: 5858883
    Abstract: The present invention relates to a fibrous base material comprising a primary layer of less fibrillated aramid fibers, synthetic graphite and at least one filler material, and a secondary layer of carbon particles on at least one surface of the fibrous base material for use in a non-asbestos friction material. In certain embodiments, the fibrous base material is impregnated with a phenolic or phenolic-based resin material, including, for example, a mixture of a phenolic resin and a silicone resin to form a friction material having good "break-in" and durability characteristics.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: January 12, 1999
    Assignee: Borg-Warner Automotive, Inc.
    Inventors: Robert C. Lam, Marc A. Yesnik, Yih-Fang Chen
  • Carbon deposit friction lining material
    Patent number: 5856244
    Abstract: The present invention relates to a friction material comprising a fibrous base material primary layer of less fibrillated aramid fibers, synthetic graphite and at least one filler material, and a secondary layer of a mixture of carbon particles and at least one retention aid coated on at least one surface of the primary layer. In certain embodiments, the fibrous base material is impregnated with a phenolic or phenolic-based resin material, including, for example, a mixture of a phenolic resin and a silicone resin to form a friction material having high heat resistance and high friction durability characteristics.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: January 5, 1999
    Assignee: Borg-Warner Automotive, Inc.
    Inventors: Robert C. Lam, Yih-Fang Chen