APPARATUS AND METHOD FOR MANUFACTURING PROPELLANT
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
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N/A
Issued Date -
Dec 23, 2021
app pub date -
Jun 22, 2021
filing date -
Jun 22, 2021
priority date (Note) -
Published
status (Latency Note)
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Abstract
A propellant manufacturing method for manufacturing a propellant including a propellant grain having a first surface on which combustion starts upon ignition and a second surface to be coupled to a wall surface that prevents combustion. The manufacturing method includes placing a portion of first propellant having a first burning rate in a first space containing a first position on the second surface; and placing a portion of second propellant having a second burning rate higher than the first burning rate in a second space containing a second position on the first propellant. The method further includes placing a portion of third propellant having a third burning rate higher than the second burning rate in a third space containing a third position on the first propellant. The method further includes completing the propellant grain by simultaneously hardening the entireties of the first propellant, the second propellant, and the third propellant.
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 | |
---|---|---|
MITSUBISHI HEAVY INDUSTRIES LTD | TOKYO |
International Classification(s)

- 2021 Application Filing Year
- F02K Class
- 347 Applications Filed
- 209 Patents Issued To-Date
- 60.24 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
IEKI, Katsunori | Tokyo, JP | 11 | 64 |
# of filed Patents : 11 Total Citations : 64 | |||
MIHARA, Chiyako | Tokyo, JP | 11 | 64 |
# of filed Patents : 11 Total Citations : 64 | |||
NISHIKAWA, Seiki | Tokyo, JP | 3 | 1 |
# of filed Patents : 3 Total Citations : 1 | |||
SUZUKI, Tasuku | Tokyo, JP | 16 | 132 |
# of filed Patents : 16 Total Citations : 132 |
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Patent Citation Ranking
- 1 Citation Count
- F02K Class
- 52.71 % this patent is cited more than
- 4 Age
Forward Cite Landscape
- No Forward Cites to Display

Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jun 23, 2025 |
7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 23, 2029 |
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 23, 2033 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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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