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
Stats
-
N/A
Issued Date -
Dec 23, 2004
app pub date -
Jun 18, 2003
filing date -
Jun 18, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
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.
First Claim
all claims..Other Claims data not available
Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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AFTON CHEMICAL INTANGIBLES LLC | 500 SPRING STREET RICHMOND VA 23219 |
International Classification(s)

- 2003 Application Filing Year
- C10M Class
- 201 Applications Filed
- 115 Patents Issued To-Date
- 57.22 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Mishra, Munmaya K | Richmond, VA | 190 | 3376 |
# of filed Patents : 190 Total Citations : 3376 | |||
Passut, Charles A | Midlothian, VA | 14 | 199 |
# of filed Patents : 14 Total Citations : 199 | |||
Venhaus, David A | Glen Allen, VA | 10 | 142 |
# of filed Patents : 10 Total Citations : 142 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 18 Citation Count
- C10M Class
- 75 % this patent is cited more than
- 21 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

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