Patent US3027294A successfully refreshed from Google Patents.
US3027294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of water-repellent asbestos-cement products
Assignee: Ruberoid Co
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Filing: 1959-12-17
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Granted: 1962-03-27
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Expires: 1979-12-17
Abstract
No abstract record available.
Inventors
- 👤 Phillip S Bettoli
- 👤 Clarence R Eckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:29
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/48; C04B41/483; C04B41/60; C04B41/61; C04B41/62; C04B41/63
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
AN ASBESTOS-CEMENT PRODUCT HAVING AT LEAST ONE OF ITS SURFACES COATED WITH AND INTEGRALLY BONDED TO A CONTINUOUS HYDROPHOBIC FILM COMPRISING A MIXTURE OF THERMOPLASTIC ACRYLIC COPOLYMERS INCLUDING A HYDROPHOBIC COPOLYMER OF METHYL METHACRYLATE AND AN ALKYL METHACRYLATE IN WHICH THE ALKYL GROUP CONTAINS FROM 4 TO 12 CARBON ATOMS.
References Cited (Backward Citations)
US2778283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |