Direct injection internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 15, 2008
Grant Date -
Apr 21, 2005
app pub date -
Aug 27, 2004
filing date -
Feb 28, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A direct injection engine has a fuel injection valve that directs a spray of fuel to each side of a spark plug electrode. The fuel mixes with the air to define a region of relatively richer air-fuel mixture and a region of relatively leaner air-fuel mixture. The electrode is positioned within the relatively leaner region.
First Claim
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Family
Country | kind | publication No. | Filing Date | Type | Sub-Type |
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- YAMAHA HATSUDOKI KABUSHIKI KAISHA
International Classification(s)

- 2004 Application Filing Year
- F02B Class
- 713 Applications Filed
- 257 Patents Issued To-Date
- 36.05 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Suzuki, Yuichi | Iwata, JP | 178 | 2033 |
# of filed Patents : 178 Total Citations : 2033 | |||
Tanaka, Daijiro | Iwata, JP | 15 | 141 |
# of filed Patents : 15 Total Citations : 141 |
Cited Art Landscape
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Patent Citation Ranking
- 1 Citation Count
- F02B Class
- 6.20 % this patent is cited more than
- 17 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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Jul 05, 2019 | AS | ASSIGNMENT | free format text: CHANGE OF NAME;ASSIGNOR:DEHN + SOEHNE GMBH + CO. KG;REEL/FRAME:051651/0078 Owner name: DEHN SE + CO KG, GERMANY Effective Date: Jul 05, 2019 |
Oct 03, 2017 | I | Issuance | |
Sep 13, 2017 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Jan 05, 2017 | P | Published | |
Nov 07, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SEITZ, THOMAS;ZAHLMANN, PETER;REEL/FRAME:040699/0661 Owner name: DEHN + SOHNE GMBH + CO. KG, GERMANY Effective Date: Nov 07, 2016 |
Feb 10, 2015 | F | Filing | |
Mar 13, 2014 | PD | Priority Date |

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