US3219467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of asbestos-cement products
Assignee: Johns Manville Corp
•
Filing: 1960-09-09
•
Granted: 1965-11-23
•
Expires: 1980-09-09
Abstract
No abstract record available.
Inventors
- 👤 Francis W Redican
- 👤 Laurence R Blair
- 👤 Julie C Yang
- 👤 Richard J Gorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:23
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; C04B28/08; E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/14; E04F13/148; C04B2201/00; C04B2201/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A METHOD OF PRODUCING GOOD QUALITY, SHAPED, CURED, ASBESTOS-CEMENT PRODUCTS, SAID METHOD COMPRISING: (A) PROVIDING AN UNDURED MIXTURE COMPRISING:
Claim 2
Independent Claim
19 words
A METHOD OF PRODUCING GOOD QUALITY, SHAPED, CURED, ASBESTOS-CEMENT PRODUCTS, SAID METHOD COMPRISING: (A) PROVIDING AN UNDURED MIXTURE COMPRISING:
References Cited (Backward Citations)
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Cited
US1977158A
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US1970921A
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GB590643A
Cited
US2779417A
Cited
US2963905A
Cited
US2934932A
Cited
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Cited
US3030258A
Cited
US3008843A
Cited
US3053081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |