US2551932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Investment material
Assignee: Individual
•
Filing: 1949-04-27
•
Granted: 1951-05-08
•
Expires: 1969-04-27
Abstract
No abstract record available.
Inventors
- 👤 Dimmer Charles Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:30
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/20; A61K; A61K6/00; A61K6/80; A61K6/849; A61K6/858; B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/37; A61C13/206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AN INVESTMENT MATERIAL CONSISTING ESSENTIALLY OF PURE BLEACHED GYPSUM DEHYDRATED IN AN AUTOCLAVE, 1/10 OF 1% TO 3% OF LIME, 1/10 OF 1% TO 5% OF THE GROUP CONSISTING OF POWDERED GUM DAMAR AND GUM ARABIC AND CONTAINING A REMAINDER CONSISTING OF NOT OVER 14% INERT FILLER AND
Claim 2
Dependent Claim
48 words
AN INVESTMENT MATERIAL CONSISTING ESSENTIALLY OF PURE BLEACHED GYPSUM DEHYDRATED IN AN AUTOCLAVE, 1/10 OF 1% TO 3% OF LIME, 1/10 OF 1% TO 5% OF THE GROUP CONSISTING OF POWDERED GUM DAMAR AND GUM ARABIC AND CONTAINING A REMAINDER CONSISTING OF NOT OVER 14% INERT FILLER AND
References Cited (Backward Citations)
US1575688A
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US1588023A
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US2049011A
Cited
US1901054A
Cited
US2077418A
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US2371688A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |