Method of grinding powder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 3, 2016
Grant Date -
Dec 26, 2013
app pub date -
Dec 12, 2011
filing date -
Feb 28, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of grinding a powder, which grinds a powder using an air stream generated inside a grinding chamber in a jet mill in which there is no place to retain powder inside the grinding chamber is provided. The method includes: a mixing step of mixing an auxiliary agent with the powder; a heating step of heating a high pressure gas; a supplying step of supplying the high pressure gas heated in the heating step into the grinding chamber; an injecting step of injecting the powder in which the auxiliary agent is mixed in the mixing step into the grinding chamber in a predetermined amount in which the concentration of the auxiliary agent inside the grinding chamber is lower than an ignition concentration; and a grinding step of grinding the powder using the air stream generated inside the grinding chamber by the high pressure gas supplied in the supplying step.
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 | |
---|---|---|
NISSHIN ENGINEERING INC | 14-1 NIHONBASHI-KOAMI-CHO CHUO-KU TOKYO 103-8544 |
International Classification(s)

- 2011 Application Filing Year
- B02C Class
- 418 Applications Filed
- 317 Patents Issued To-Date
- 75.84 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Kozawa, Kazumi | Fujimino, JP | 12 | 64 |
# of filed Patents : 12 Total Citations : 64 | |||
Tominaga, Harutoshi | Saitama, JP | 2 | 7 |
# of filed Patents : 2 Total Citations : 7 |
Cited Art Landscape
- No Cited Art to Display

Patent Citation Ranking
- 0 Citation Count
- B02C Class
- 0 % this patent is cited more than
- 9 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 | Nov 3, 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 |
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Oct 18, 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 |
Oct 17, 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 |
May 03, 2016 | I | Issuance | |
Apr 13, 2016 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Dec 26, 2013 | P | Published | |
Mar 26, 2013 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KOZAWA, KAZUMI;TOMINAGA, HARUTOSHI;REEL/FRAME:030621/0458 Owner name: NISSHIN ENGINEERING INC., JAPAN Effective Date: Mar 26, 2013 |
Dec 12, 2011 | F | Filing | |
Feb 28, 2011 | PD | Priority Date |

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