Gas hydrate production apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 16, 2013
Grant Date -
Jul 19, 2012
app pub date -
Mar 23, 2012
filing date -
Apr 5, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A gas hydrate production apparatus capable of reacting a raw gas with a raw water to thereby form a slurry gas hydrate and capable of removing water from the slurry gas hydrate by means of a gravitational dewatering unit. The gravitational dewatering unit is one including a cylindrical first tower body; a cylindrical dewatering part disposed on top of the first tower body; a water receiving part disposed outside the dewatering part; and a cylindrical second tower body disposed on top of the dewatering part, wherein the cross-sectional area of the second tower body is continuously or intermittently increased upward from the bottom.
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 | |
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MITSUI ENGINEERING & SHIPBUILDING CO LTD | CHUO-KU TOKYO 104-8439 |
International Classification(s)

- 2012 Application Filing Year
- C01B Class
- 1350 Applications Filed
- 1143 Patents Issued To-Date
- 84.67 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Arai, Takashi | Tamano, JP | 236 | 2194 |
# of filed Patents : 236 Total Citations : 2194 | |||
Horiguchi, Kiyoshi | Ichihara, JP | 5 | 22 |
# of filed Patents : 5 Total Citations : 22 | |||
Iwasaki, Toru | Ichihara, JP | 16 | 78 |
# of filed Patents : 16 Total Citations : 78 | |||
Tokinosu, Akira | Tokyo, JP | 3 | 17 |
# of filed Patents : 3 Total Citations : 17 |
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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

Legal Events
Date | Code | Event | Description |
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Mar 19, 2018 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Mar 19, 2018 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.) |
Feb 18, 2018 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Feb 18, 2018 |
Oct 02, 2017 | FEPP | FEE PAYMENT PROCEDURE | free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.) |
Oct 05, 2016 | AS | ASSIGNMENT | free format text: CHANGE OF NAME;ASSIGNOR:CITIZEN HOLDINGS CO., LTD.;REEL/FRAME:041479/0804 Owner name: CITIZEN WATCH CO., LTD., JAPAN Effective Date: Oct 05, 2016 |
Dec 02, 2014 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Feb 18, 2014 | I | Issuance | |
Jun 18, 2009 | P | Published | |
Feb 28, 2008 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SHIMIZU, HIDEKI;KASAI, TSUNEHARU;REEL/FRAME:020758/0969 Owner name: CITIZEN HOLDINGS CO., LTD., JAPAN Effective Date: Feb 28, 2008 |
Sep 05, 2006 | F | Filing | |
Sep 27, 2005 | PD | Priority Date |

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