Patent US3006777A successfully refreshed from Google Patents.
US3006777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building materials
Assignee: American Nuclear Shield Corp
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Filing: 1960-08-22
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Granted: 1961-10-31
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Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Owen W Atkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:47
CPC Classifications
C; C04; C04B; C04B22/00; C04B22/08; C04B22/14; C04B22/142; C04B33/00; C04B33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A BUILDILNG MATERIAL COMPOSITION WHICH CONSISTS ESSENTIALLY OF A CONVENTIONAL AGGREGATE, BARIUM SULPHATE PARTICLES, AND A BINDER SELECTED FROM THE GROUP CONSISTING OF PORTLAND CEMENT, CLAY AND GYPSUM LIME, THE BARIUM SULPHATE CONSTITUTING ABOUT 40% TO 50% BY VOLUME OF DRY INGREDIENTS.
Claim 2
Dependent Claim
42 words
A BUILDILNG MATERIAL COMPOSITION WHICH CONSISTS ESSENTIALLY OF A CONVENTIONAL AGGREGATE, BARIUM SULPHATE PARTICLES, AND A BINDER SELECTED FROM THE GROUP CONSISTING OF PORTLAND CEMENT, CLAY AND GYPSUM LIME, THE BARIUM SULPHATE CONSTITUTING ABOUT 40% TO 50% BY VOLUME OF DRY INGREDIENTS.
References Cited (Backward Citations)
US1576730A
Cited
US2961399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |