Patent US3845878A successfully refreshed from Google Patents.
Patent US3294087A successfully refreshed from Google Patents.
US3294087A
Expired / Lapsed
US
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Synergistic decomposable set-inhibitors for plaster of paris
Assignee: Individual
•
Filing: 1966-05-02
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Granted: 1966-12-27
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Expires: 1986-05-02
Abstract
No abstract record available.
Inventors
- 👤 David F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:05
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B28/141; C04B2103/00; C04B2103/20; C04B2103/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A SETTABLE PLASTER OF PARIS MIX COMPRISING MAJOR PROPORTIONS OF POWDERED PLASTER OF PARIS AND WATER AND MINOR PROPORTIONS OF (1) BORIC ACID IN AMOUNT FROM ABOUT 0.05 TO ABOUT 1 PERCENT OF THE WEIGHT OF PLASTER OF PARIS AND (2) NH3 IN AMOUNT FROM ABOUT 8 PERCENT TO ABOUT 23 PRECENT OF THE WEIGHT OF WATER PLUS NH3.
Claim 2
Dependent Claim
59 words
A SETTABLE PLASTER OF PARIS MIX COMPRISING MAJOR PROPORTIONS OF POWDERED PLASTER OF PARIS AND WATER AND MINOR PROPORTIONS OF (1) BORIC ACID IN AMOUNT FROM ABOUT 0.05 TO ABOUT 1 PERCENT OF THE WEIGHT OF PLASTER OF PARIS AND (2) NH3 IN AMOUNT FROM ABOUT 8 PERCENT TO ABOUT 23 PRECENT OF THE WEIGHT OF WATER PLUS NH3.
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |