SEAL DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jun 26, 2014
app pub date -
Oct 3, 2012
filing date -
Oct 21, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

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Abstract
A seal device including: three ring-shaped first vertical wall portions (21) which extend toward a rotational body (12) from a stationary body (11) and are arranged at predetermined intervals in an axial center direction (A) of the rotational body (12); a ring-shaped second vertical wall portion (22) which extends toward the rotational body (12) from the stationary body (11) and is adjacent to the first vertical wall portions (21), the thickness of which is thicker than the first vertical wall portions (21); a ring-shaped protrusion portion (23) which faces the second vertical wall portion (22) and protrudes toward the stationary body (11) from the rotational body (12); and a plurality of swirl breaker chambers (24) which are arranged in the stationary body (11) at predetermined intervals in a circumferential direction of the rotational body (12) to face the protrusion portion (23).
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 | |
---|---|---|
MITSUBISHI HEAVY INDUSTRIES LTD | 2-3 MARUNOUCHI 3-CHOME CHIYODA-KU TOKYO 100-8332 | |
MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION | 34-6 SHIBA 5-CHOME MINATO-KU TOKYO 108-0014 |
International Classification(s)

- 2012 Application Filing Year
- F16J Class
- 518 Applications Filed
- 392 Patents Issued To-Date
- 75.68 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Fukao, Shinji | Tokyo, JP | 8 | 13 |
# of filed Patents : 8 Total Citations : 13 | |||
Nakaniwa, Akihiro | Tokyo, JP | 57 | 169 |
# of filed Patents : 57 Total Citations : 169 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 1 Citation Count
- F16J Class
- 8.72 % this patent is cited more than
- 11 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 | Dec 26, 2025 |
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

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