US3093529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of water resistant laminates and silicate adhesive therefor
Assignee: PQ Corp
•
Filing: 1955-09-01
•
Granted: 1963-06-11
•
Expires: 1975-09-01
Abstract
No abstract record available.
Inventors
- 👤 Helmut V Freyhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:19
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; B; B32; B32B; B32B27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1832752A
Cited
US1976435A
Cited
US2044466A
Cited
US2069486A
Cited
US2287411A
Cited
US2434466A
Cited
US2704268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |