US4003771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid grain fuels containing polyphosphonitrilics difluoride for chemical lasers
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1975-08-07
•
Granted: 1977-01-18
•
Expires: 1995-08-07
Abstract
Abstract This invention relates to laser fuels and, more specifically, to solid fuels suitable for use in a chemical laser.
Inventors
- 👤 Hyman R. Lubowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:25
CPC Classifications
C; C06; C06D; C06D5/00; C06D5/06; Y; Y10; Y10S; Y10S149/00; Y10S149/119
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
A solid grain fuel composition for a chemical laser comprising: a. an oxidizing salt containing fluorine comprising: NF 4 BF 4 , NF 4 SbF 6 , N 2 F 5 AsF 6 , N 2 F 4 AsF 5 , NF 4 AsF 6 , NF 3 HBF 4 , NF 3 HClF 3 , N 2 F 4 HBF 4 , N 2 F 5 BF 4 , CsSF 5 , SF 5 NF 2 , KClF 4 , SF 3 BF 4 , KBrF 4 , Ba(BrF 4 ) 2 , LiClF 4 , and mixtures thereof; b. a polymer fuel comprising polyphosphonitrilic difluoride; c. an alkali metal fluoride sequestering agent comprising: KF, CsF, BaF 2 , RbF, CaF 2 , and mixtures thereof; and d. an augmenting fuel comprising: Mg, Mg 3 N 2 , A1, AlN, C, B, Be, and mixtures thereof.
Claim 2
Dependent Claim
147 words
A solid grain fuel composition for a chemical laser comprising: a. an oxidizing salt containing fluorine comprising: NF 4 BF 4 , NF 4 SbF 6 , N 2 F 5 AsF 6 , N 2 F 4 AsF 5 , NF 4 AsF 6 , NF 3 HBF 4 , NF 3 HClF 3 , N 2 F 4 HBF 4 , N 2 F 5 BF 4 , CsSF 5 , SF 5 NF 2 , KClF 4 , SF 3 BF 4 , KBrF 4 , Ba(BrF 4 ) 2 , LiClF 4 , and mixtures thereof; b. a polymer fuel comprising polyphosphonitrilic difluoride; c. an alkali metal fluoride sequestering agent comprising: KF, CsF, BaF 2 , RbF, CaF 2 , and mixtures thereof; and d. an augmenting fuel comprising: Mg, Mg 3 N 2 , A1, AlN, C, B, Be, and mixtures thereof.
Claim 3
Dependent Claim
40 words
A solid grain fuel composition for a chemical laser comprising: a. an oxidizing salt containing fluorine; b. a polymer fuel comprising polyphosphonitrilic nitrilic difluoride; and, as optional ingredients, a. an alkali metal fluoride sequestering agent; and b. an augmenting fuel.
Claim 4
Dependent Claim
40 words
A solid grain fuel composition for a chemical laser comprising: a. an oxidizing salt containing fluorine; b. a polymer fuel comprising polyphosphonitrilic nitrilic difluoride; and, as optional ingredients, a. an alkali metal fluoride sequestering agent; and b. an augmenting fuel.
References Cited (Backward Citations)
US3753811A
Cited
US2980495A
Cited
US3703359A
Cited
US3732132A
Cited
US3797238A
Cited
US3752703A
Cited
US3669020A
Cited
US3863176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |