US2830885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delay compositions
Assignee: PPG Architectural Coatings Canada Inc
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Filing: 1956-03-29
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Granted: 1958-04-15
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Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Hugh M Kerr
- 👤 Towell Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:46
CPC Classifications
C; C06; C06C; C06C5/00; C06C5/06; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/114
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A SUBSTANTIALLY GASLESS, SLOW-BURNING DELAY COMPOSITION CONSISTING ESSENTIALLY, PER 100 PARTS BY WEIGHT OF SAID COMPOSITION, OF 6.5 TO 50 PARTS OF FUEL AND 93.5 TO 50 PARTS OF OXIDISING MATERIAL, SAID FUEL CONSISTING ESSENTIALLY OF A MIXTURE OF NOT LESS THAN 60% BY WEIGHT OF SILICON AND NOT MORE THAN 40% BY WEIGHT OF SOLID, NONMETALLIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF SELENIUM AND TELLURIUM, AND SAID OXIDISING MATERIAL COMPRISING A MIXTURE OF LEAD OXIDES AND WATER-INSOLUBLE METALLIC CHROMATES CONTAINING NOT LESS THAN 30% BY WEIGHT OF LEAD OXIDES.
Claim 2
Dependent Claim
91 words
A SUBSTANTIALLY GASLESS, SLOW-BURNING DELAY COMPOSITION CONSISTING ESSENTIALLY, PER 100 PARTS BY WEIGHT OF SAID COMPOSITION, OF 6.5 TO 50 PARTS OF FUEL AND 93.5 TO 50 PARTS OF OXIDISING MATERIAL, SAID FUEL CONSISTING ESSENTIALLY OF A MIXTURE OF NOT LESS THAN 60% BY WEIGHT OF SILICON AND NOT MORE THAN 40% BY WEIGHT OF SOLID, NONMETALLIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF SELENIUM AND TELLURIUM, AND SAID OXIDISING MATERIAL COMPRISING A MIXTURE OF LEAD OXIDES AND WATER-INSOLUBLE METALLIC CHROMATES CONTAINING NOT LESS THAN 30% BY WEIGHT OF LEAD OXIDES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-14 | 1961-10-14 | 1962-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-14 | 1965-10-14 | 1966-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-14 | 1969-10-14 | 1970-04-15 | $7700.00 | Window Closed / Lapsed |