US3197313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Asbestos-cement products
Assignee: Johns Manville Corp
•
Filing: 1962-04-16
•
Granted: 1965-07-27
•
Expires: 1982-04-16
Abstract
No abstract record available.
Inventors
- 👤 Norman S Greiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:41
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/002; C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; E04D1/00; E04D1/12; E04D1/16; E04D1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A FUNGUS RESISTANT ASBESTOS-CEMENT PRODUCT COMPRISING ESSENTIALLY AT LEAST APPROXIMATELY 20% BY WEIGHT OF HYDRAULIC CEMENT AND AT LEAST APPROXIMATELY 5% BY WEIGHT OF ASBESTOS FIBER, AND CONTAINING DISPERSED THROUGHOUT APPROXIMATELY 5 TO 25% BY WEIGHT OF FINELY DIVIDED PARTICULATE BARIUM BORATE.
Claim 2
Dependent Claim
42 words
A FUNGUS RESISTANT ASBESTOS-CEMENT PRODUCT COMPRISING ESSENTIALLY AT LEAST APPROXIMATELY 20% BY WEIGHT OF HYDRAULIC CEMENT AND AT LEAST APPROXIMATELY 5% BY WEIGHT OF ASBESTOS FIBER, AND CONTAINING DISPERSED THROUGHOUT APPROXIMATELY 5 TO 25% BY WEIGHT OF FINELY DIVIDED PARTICULATE BARIUM BORATE.
References Cited (Backward Citations)
US2084354A
Cited
US2818344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |