Fluid ejection device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 19, 2019
Grant Date -
Jan 25, 2018
app pub date -
Apr 30, 2015
filing date -
Apr 30, 2015
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
A fluid ejection device includes a fluid slot, a first fluid ejection chamber communicated with the fluid slot and including a first drop ejecting element, a second fluid ejection chamber including a second drop ejecting element, and a fluid circulation path including a first portion communicated with the fluid slot and the second fluid ejection chamber, and a second portion communicated with the first fluid ejection chamber and the second fluid ejection chamber, with the fluid circulation path including a fluid circulating element within the first portion.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
HEWLETT-PACKARD DEVELOPMENT COMPANY L P | 10300 ENERGY DRIVE SPRING TX 77389 |
International Classification(s)

- 2015 Application Filing Year
- B41J Class
- 2708 Applications Filed
- 2451 Patents Issued To-Date
- 90.51 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Govyadinov, Alexander | Corvallis, US | 233 | 1137 |
# of filed Patents : 233 Total Citations : 1137 | |||
Torniainen, Erik D | Corvallis, US | 79 | 329 |
# of filed Patents : 79 Total Citations : 329 | |||
Yamashita, Tsuyoshi | Corvallis, US | 98 | 908 |
# of filed Patents : 98 Total Citations : 908 |
Cited Art Landscape
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Patent Citation Ranking
- 1 Citation Count
- B41J Class
- 41.52 % this patent is cited more than
- 6 Age
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- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 19, 2026 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 19, 2030 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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 |
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