US4184901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simultaneous yellow smoke and yellow flame composition containing bismuth subnitrate
Assignee: United States Department of the Navy
•
Filing: 1978-08-21
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Granted: 1980-01-22
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Expires: 1998-08-21
Abstract
Abstract A pyrotechnic composition which, when burned, produces yellow smoke and yellow flame. The composition is comprised of between 5 and 30 percent of a fuel which is either magnesium or silicon, between 65 and 85 percent of bismuth subnitrate and between 5 and 13 percent of an epoxy binder.
Inventors
- 👤 John E. Tanner, Jr.
- 👤 Henry A. Webster, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:36
CPC Classifications
C; C06; C06C; C06C15/00; C06B; C06B33/00; C06B33/04; C06D; C06D3/00; Y; Y10; Y10S; Y10S149/00; Y10S149/116; Y10S149/117
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
50 words
A pyrotechnic composition for simultaneously producing yellow smoke and yellow flame comprised, by weight, of between 5 and 30 percent of a fuel selected from a group consisting of magnesium and silicon, between 65 and 85 percent of bismuth subnitrate, and between 5 and 13 percent of an epoxy binder.
Claim 2
Dependent Claim
50 words
A pyrotechnic composition for simultaneously producing yellow smoke and yellow flame comprised, by weight, of between 5 and 30 percent of a fuel selected from a group consisting of magnesium and silicon, between 65 and 85 percent of bismuth subnitrate, and between 5 and 13 percent of an epoxy binder.
Claim 3
Dependent Claim
24 words
A pyrotechnic composition for simultaneously producing yellow smoke and yellow flame as set forth in claim 1 having about 5 percent of diatomaceous earth.
Claim 4
Dependent Claim
22 words
A pyrotechnic composition for simultaneously producing yellow smoke and yellow flame as set forth in claim 1 wherein said fuel is magnesium.
Claim 5
Dependent Claim
22 words
A pyrotechnic composition for simultaneously producing yellow smoke and yellow flame as set forth in claim 1 wherein said fuel is silicon.
Claim 6
Dependent Claim
30 words
A pyrotechnic composition for simultaneously producing yellow smoke and yellow flame as set forth in claim 1 having about 10 percent of magnesium and about 85 percent of bismuth subnitrate.
Claim 7
Dependent Claim
30 words
A pyrotechnic composition for simultaneously producing yellow smoke and yellow flame as set forth in claim 1 having about 10 percent of silicon and about 85 percent of bismuth subnitrate.
Claim 8
Dependent Claim
40 words
A pyrotechnic composition which, upon burning, produces yellow smoke and yellow flame comprised, by weight, of about 10 percent of magnesium, about 80 percent of bismuth subnitrate, about 5 percent of diatomaceous earth and about 5 percent of epoxy binder.
Claim 9
Dependent Claim
40 words
A pyrotechnic composition which, upon burning, produces yellow smoke and yellow flame comprised, by weight, of about 10 percent of magnesium, about 80 percent of bismuth subnitrate, about 5 percent of diatomaceous earth and about 5 percent of epoxy binder.
Claim 10
Dependent Claim
36 words
A pyrotechnic composition which, upon burning, produces yellow smoke and yellow flame as set forth in claim 7 wherein said epoxy binder is comprised of about 70 percent of resin and about 30 percent of hardener.
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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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |