US3835074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Joint cement compositions
Assignee: Hercules LLC
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Filing: 1973-04-26
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Granted: 1974-09-10
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Expires: 1993-04-26
Abstract
Abstract JOINT CEMENTS SUITABLE FOR USE WITH PLASTER WALLBOARD ARE DISCLOSED WHEREIN THE ABESTOS CUSTOMARILY USED TO IMPART WATER BINDING PROPERTIES AND PSEUDOPLASTICITY IS REPLACED BY A WATER-INSOLUBLE, FIBROUS HYDROXYETHYL CELLULOSE.
Inventors
- 👤 A Desmarais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:45
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C04; C04B; C04B26/00; C04B26/02; C04B26/04; C08L; C08L57/00; C04B2111/00; C04B2111/00474; C04B2111/00663; C04B2111/00672
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |