Pipe joint
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 10, 2015
Grant Date -
Mar 22, 2012
app pub date -
May 7, 2010
filing date -
May 11, 2009
priority date (Note) -
In Force
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Patent Longevity
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Forward Citations
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Abstract
A pipe joint comprising a pressing nut into which a flexible pipe is inserted, a joint body into which the pressing nut is partially inserted, a resilient means unlocked when pushed by a tip end of the flexible pipe, a sealing member, a retainer engaging the flexible pipe, and an engaging mechanism keeping the pressing nut at a predetermined position in the joint body; the engaging mechanism comprising a stop ring, an annular groove formed on an outer surface of the pressing nut for receiving the stop ring, pluralities of engaging grooves formed on an inner surface of the joint body for receiving the stop ring and communicating with each other; the stop ring engaging both of the annular groove and the first engaging groove before the connection of the flexible pipe is completed; and when the flexible pipe is pulled after completing the connection, the stop ring moving from the first engaging groove to the second engaging groove to draw the pressing nut from the joint body, so that the normal connection of the flexible pipe can be confirmed.
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 | |
---|---|---|
TOKYO GAS CO LTD | TOKYO 105-8527 | |
PROTERIAL LTD | 6-36 TOYOSU 5-CHROME KOTO-KU TOKYO 135-0061 |
International Classification(s)

- 2010 Application Filing Year
- F16L Class
- 1178 Applications Filed
- 754 Patents Issued To-Date
- 64.01 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Araki, Satoru | Kuwana, JP | 121 | 2552 |
# of filed Patents : 121 Total Citations : 2552 | |||
Hamaguchi, Tamaki | Tokyo, JP | 2 | 39 |
# of filed Patents : 2 Total Citations : 39 | |||
Hattori, Akihiro | Kuwana, JP | 18 | 336 |
# of filed Patents : 18 Total Citations : 336 | |||
Inotani, Takaaki | Kuwana, JP | 2 | 16 |
# of filed Patents : 2 Total Citations : 16 | |||
Ishibe, Fumikazu | Kuwana, JP | 1 | 13 |
# of filed Patents : 1 Total Citations : 13 | |||
Minami, Tomoyuki | Tokyo, JP | 17 | 85 |
# of filed Patents : 17 Total Citations : 85 | |||
Okiayu, Takuji | Kuwana, JP | 1 | 13 |
# of filed Patents : 1 Total Citations : 13 | |||
Satoh, Fumitaka | Tokyo, JP | 6 | 110 |
# of filed Patents : 6 Total Citations : 110 | |||
Uchiumi, Youichi | Kawaguchi, JP | 1 | 13 |
# of filed Patents : 1 Total Citations : 13 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 6 Citation Count
- F16L Class
- 16.56 % this patent is cited more than
- 10 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 10, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
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 |
Full Text

Legal Events
Date | Code | Event | Description |
---|---|---|---|
Jun 11, 2024 | AS | ASSIGNMENT | free format text: CHANGE OF NAME;ASSIGNOR:HITACHI METALS, LTD.;REEL/FRAME:069068/0807 Owner name: PROTERIAL, LTD., JAPAN Effective Date: Jan 04, 2023 free format text: CHANGE OF ADDRESS;ASSIGNOR:HITACHI METALS, LTD.;REEL/FRAME:069066/0374 Owner name: HITACHI METALS, LTD., JAPAN Effective Date: Jul 01, 2022 free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:SANKOH CO., LTD.;REEL/FRAME:068716/0023 Owner name: TOKYO GAS CO., LTD., JAPAN Effective Date: Jun 11, 2024 free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:SANKOH CO., LTD.;REEL/FRAME:068716/0023 Owner name: PROTERIAL, LTD., JAPAN Effective Date: Jun 11, 2024 |
Apr 26, 2023 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8 |
Apr 25, 2019 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4 |
Nov 10, 2015 | I | Issuance | |
Oct 21, 2015 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Mar 22, 2012 | P | Published | |
Oct 25, 2011 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HAMAGUCHI, TAMAKI;MINAMI, TOMOYUKI;SATOH, FUMITAKA;AND OTHERS;REEL/FRAME:027218/0721 Owner name: HITACHI METALS, LTD., JAPAN Effective Date: Oct 25, 2011 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HAMAGUCHI, TAMAKI;MINAMI, TOMOYUKI;SATOH, FUMITAKA;AND OTHERS;REEL/FRAME:027218/0721 Owner name: SANKOH CO., LTD., JAPAN Effective Date: Oct 25, 2011 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HAMAGUCHI, TAMAKI;MINAMI, TOMOYUKI;SATOH, FUMITAKA;AND OTHERS;REEL/FRAME:027218/0721 Owner name: TOKYO GAS CO., LTD., JAPAN Effective Date: Oct 25, 2011 |
May 07, 2010 | F | Filing | |
May 11, 2009 | PD | Priority Date |

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