US3466822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-healing reinforced concrete structures and process for the preparation thereof
Assignee: EIDP Inc
•
Filing: 1967-04-28
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Granted: 1969-09-16
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Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 Donald Robert Hull
- 👤 John Augustus Piccard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:21
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/02; B28B23/04; B28B23/12; B28B23/16; E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/06; E04C5/00; E04C5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2652093A
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US2825117A
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US2827414A
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US2836529A
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US3084910A
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US3262230A
Cited
US3262231A
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US3208838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |