Two-phase alloy, product using said two-phase alloy, and method for producing said product
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 21, 2020
Grant Date -
Oct 12, 2017
app pub date -
Sep 28, 2015
filing date -
Sep 29, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An object of the invention is to provide: a two-phase alloy as a metal material that can be preferably utilized under circumstances of a temperature range and a high corrosion as in an oil well, the two-phase alloy having a high corrosion resistance and good mechanical properties that are equivalent or more than those of conventional ones, and saving a cost; a product of the two-phase alloy; and a method for producing the product. There is provided a two-phase alloy containing Cr as a major component and including two phases of an austenite phase and a ferrite phase in a mixed state. The alloy has a chemical composition containing: 34-70 mass % of Cr; 17-45 mass % of Ni; 10-35 mass % of Fe; 0.1-2 mass % of Mn; 0.1-1 mass % of Si; and impurities. The total content of the Ni and the Fe is 30-65 mass %.
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 | |
---|---|---|
HITACHI LTD | TOKYO JAPAN |
International Classification(s)
- C09C:TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBRO....
- B22F:WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES F....
- C22F:CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS MET....
- C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
- C22C:ALLOYS
- H05K:PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAIL....
- B21B:ROLLING OF METAL

- 2015 Application Filing Year
- C09C Class
- 258 Applications Filed
- 201 Patents Issued To-Date
- 77.91 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Aono, Yasuhisa | Tokyo, JP | 40 | 530 |
# of filed Patents : 40 Total Citations : 530 | |||
Kimura, Tomonori | Tokyo, JP | 92 | 1055 |
# of filed Patents : 92 Total Citations : 1055 | |||
Maruno, Yusaku | Tokyo, JP | 6 | 44 |
# of filed Patents : 6 Total Citations : 44 | |||
Noujima, Masafumi | Tokyo, JP | 17 | 137 |
# of filed Patents : 17 Total Citations : 137 | |||
Ogata, Makoto | Tokyo, JP | 39 | 308 |
# of filed Patents : 39 Total Citations : 308 | |||
Okizaki, Naoya | Tokyo, JP | 9 | 6 |
# of filed Patents : 9 Total Citations : 6 |
Cited Art Landscape
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Patent Citation Ranking
- 1 Citation Count
- C09C Class
- 59.02 % this patent is cited more than
- 5 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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7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 21, 2028 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 21, 2032 |
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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