Co-layered propellant charge
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United States of America Patent
Stats
-
Apr 16, 2024
Grant Date -
Jul 30, 2020
app pub date -
Aug 20, 2018
filing date -
Aug 18, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention is directed to a co-layered propellant grain having an exposed outer surface, wherein said propellant grain comprises an outer layer comprising a slow burning propellant composition located on essentially the entire outer surface of the grain, and an inner layer comprising a fast burning propellant composition having a higher linear burn rate than said slow burning propellant composition; wherein said propellant grain has a structure such that after ignition, the inner layer becomes increasingly exposed at the outer surface.
First Claim
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International Classification(s)
- 2018 Application Filing Year
- C06B Class
- 63 Applications Filed
- 44 Patents Issued To-Date
- 69.85 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C06B Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Oct 16, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 16, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 16, 2035 |
