Use of dispersant viscosity index improvers in exhaust gas recirculation engines

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20040259742A1
SERIAL NO

10464614

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The use in a cooled exhaust gas recirculation (EGR) engine of an olefin copolymer dispersant viscosity index improver to reduce or eliminate oil thickening and sludge formation is provided. Also provided are lubricated cooled EGR engines with ability to pass rigorous oil viscosity and emission standards.

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Patent Owner(s)

Patent OwnerAddress
AFTON CHEMICAL INTANGIBLES LLC500 SPRING STREET RICHMOND VA 23219

International Classification(s)

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  • 2003 Application Filing Year
  • C10M Class
  • 201 Applications Filed
  • 115 Patents Issued To-Date
  • 57.22 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20032004200520062007200820092010201120122013201420150255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mishra, Munmaya K Richmond, VA 190 3376
Passut, Charles A Midlothian, VA 14 199
Venhaus, David A Glen Allen, VA 10 142

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Patent Citation Ranking

  • 18 Citation Count
  • C10M Class
  • 75 % this patent is cited more than
  • 21 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges111633411633101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 700102030405060708090100110120130140150160170180

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