US3690971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrotechnic composition for colored smoke production
Assignee: Boeing North American Inc
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Filing: 1970-08-11
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Granted: 1972-09-12
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Expires: 1990-08-11
Abstract
Abstract A PYROTECHNIC COMPOSITION FOR COLORED SMOKE PRODUCTION INCLUDING A DYE PRECURSOR WHICH IS CAPABLE OF REACTING IN SITU TO YEILD A SUBLIMABLE DYE WHICH WILL RECONDENSE AS A COLORED SMOKE AND A HEAT PRODUCING COMPOSITION WHICH IS CAPABLE OF GENERATING SUFFICIENT HEAT TO REACT THE DYE PRECURSOR TO YIELD THE SUBLIMABLE DYE AND TO SUBLIME AND DYE WITHOUT SUBSTANTIAL DESTRUCTION THEREOF.
Inventors
- 👤 Frank C Gunderloy
- 👤 Charles L Hamermesh
- 👤 Ross I Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:07
CPC Classifications
C; C06; C06D; C06D3/00; C06B; C06B29/00; C06B29/02; C06B29/08; C06B29/10; Y; Y10; Y10S; Y10S149/00; Y10S149/117
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |