Electromagnetic induction casting apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Feb 24, 2004
Grant Date -
Nov 6, 2003
app pub date -
Sep 26, 2001
filing date -
Mar 23, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To restrict to a low level a temperature gradient of an ingot immediately after solidification in a bottomless crucible in a electromagnetic induction casting method using an electrically conductive bottomless crucible. An upper section and a lower section of an electrically conductive bottomless crucible to be disposed inside an induction coil are configured as a water-cooled section and a non-water-cooled section. Both the water-cooled section and the non-water-cooled section are divided by vertical slits into a plurality of portions in a circumferential direction. Rapid cooling with water in the lower section of the crucible is restricted.
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 | |
---|---|---|
SUMITOMO MITSUBISHI SILICON CORPORATION | 2-1 SHIBAURA 1-CHOME MINATO-KU TOKYO 105-8634 |
International Classification(s)

- 2001 Application Filing Year
- B22D Class
- 292 Applications Filed
- 118 Patents Issued To-Date
- 40.42 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kaneko, Kyojiro | Saint-Martin d'Heres, FR | 13 | 121 |
# of filed Patents : 13 Total Citations : 121 | |||
Kimura, Naritoshi | Amagasaki, JP | 2 | 25 |
# of filed Patents : 2 Total Citations : 25 | |||
Sasatani, Kenichi | Ibaraki, JP | 5 | 48 |
# of filed Patents : 5 Total Citations : 48 |
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Patent Citation Ranking
- 9 Citation Count
- B22D Class
- 12.54 % this patent is cited more than
- 21 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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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

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Nov 05, 2021 | 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 |
Jun 05, 2018 | I | Issuance | |
May 16, 2018 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Feb 08, 2018 | P | Published | |
Oct 26, 2016 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UIYYASATHIAN, SARAYUT;REEL/FRAME:040313/0244 Owner name: PTT EXPLORATION AND PRODUCTION PUBLIC COMPANY LIMI Effective Date: Oct 26, 2016 |
Dec 08, 2015 | F | Filing |

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