US3501323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing building structural and paving products using a calcium silicate hydrate bonding matrix
Assignee: Colonial Sugar Refining Co Ltd
•
Filing: 1968-07-09
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Granted: 1970-03-17
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Expires: 1988-07-09
Abstract
No abstract record available.
Inventors
- 👤 David R Moorehead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:14
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/18; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3202522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |