US3664898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrotechnic composition
Assignee: United States Department of the Navy
•
Filing: 1969-08-04
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Granted: 1972-05-23
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Expires: 1989-08-04
Abstract
Abstract The addition of transition metals or oxides or salts thereof, to pyrotechnic compositions containing conventional fuels and oxidizers, to greatly improve the luminous efficiency, average luminous output and propagative burning characteristics of such pyrotechnic compositions. The elements and compounds which are added also reduce the burning rate and lower the ignition temperature of such pyrotechnic compositions.
Inventors
- 👤 Francis R Taylor
- 👤 Patricia J Leader
- 👤 Raymond P Westerdahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:50
CPC Classifications
C; C06; C06C; C06C15/00; C06B; C06B33/00
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
23 words
The pyrotechnic composition of claim 1 wherein said salts are selected from the group consisting of Na2CrO4, VOSO4, Zr(NO3)4.5H2O, Na2WO4.2H2O, KMnO4 and Na2Cr2O7.2H2O.
Claim 2
Dependent Claim
27 words
The pyrotechnic composition of claim 1 wherein said oxides are selected from the group consisting of Cr2O3, TiO2, Fe2O3, MnO2, Mn3O4, Mn2O3, ZrO2, WO3, MoO3 and CrO3.
Claim 3
Dependent Claim
28 words
The pyrotechnic composition of claim 1 wherein said transition metals are present in an amount between about 4 and about 12 percent by weight of said pyrotechnic composition.
Claim 4
Dependent Claim
28 words
The pyrotechnic composition of claim 1 wherein said transition metals are present in an amount between about 5 and about 7 percent by weight of said pyrotechnic composition.
Claim 5
Dependent Claim
12 words
The pyrotechnic composition of claim 5 wherein said transition metal is V.
Claim 6
Dependent Claim
12 words
The pyrotechnic composition of claim 5 wherein said transition metal is Nb.
Claim 7
Dependent Claim
12 words
The pyrotechnic composition of claim 5 wherein said transition metal is Ta.
Claim 8
Dependent Claim
12 words
The pyrotechnic composition of claim 5 wherein said transition metal is Mo.
Claim 9
Dependent Claim
12 words
The pyrotechnic composition of claim 5 wherein said transition metal is W.
Claim 10
Dependent Claim
12 words
The pyrotechnic composition of claim 5 wherein said transition metal is Mn.
Claim 11
Dependent Claim
27 words
The pyrotechnic composition of claim 2 wherein said salts are present in an amount between about 4 and about 12 percent by weight of said pyrotechnic composition.
Claim 12
Dependent Claim
27 words
The pyrotechnic composition of claim 2 wherein said salts are present in an amount between about 5 and about 7 percent by weight of said pyrotechnic composition.
Claim 13
Dependent Claim
15 words
The pyrotechnic composition of claim 13 wherein said salt of a transition metal is Na2CrO4.
Claim 14
Dependent Claim
15 words
The pyrotechnic composition of claim 13 wherein said salt of a transition metal is VOSO4.
Claim 15
Dependent Claim
15 words
The pyrotechnic composition of claim 13 wherein said salt of a transition metal is Zr(NO3)4.5H2O.
Claim 16
Dependent Claim
15 words
The pyrotechnic composition of claim 13 wherein said salt of a transition metal is Na2WO4.2H2O.
Claim 17
Dependent Claim
15 words
The pyrotechnic composition of claim 13 wherein said salt of a transition metal is KMnO4.
Claim 18
Dependent Claim
15 words
The pyrotechnic composition of claim 13 wherein said salt of a transition metal is Na2Cr2O7.2H2O.
Claim 19
Dependent Claim
27 words
The pyrotechnic composition of claim 3 wherein said oxides are present in an amount between about 4 and about 12 percent by weight of said pyrotechnic composition.
Claim 20
Dependent Claim
27 words
The pyrotechnic composition of claim 3 wherein said oxides are present in an amount between about 5 and about 7 percent by weight of said pyrotechnic composition.
Claim 21
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is Cr2O3.
Claim 22
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is TiO2.
Claim 23
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is Fe2O3.
Claim 24
Dependent Claim
15 words
The pyrotechnic composiTion of claim 21 wherein said oxide of a transition metal is MnO2.
Claim 25
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is Mn3O4.
Claim 26
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is Mn2O3.
Claim 27
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is ZrO2.
Claim 28
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is WO3.
Claim 29
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is MoO3.
Claim 30
Dependent Claim
15 words
The pyrotechnic composition of claim 21 wherein said oxide of a transition metal is CrO3.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |