Patent US2952226A successfully refreshed from Google Patents.
Patent US2778283A successfully refreshed from Google Patents.
US2778283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of coated asbestos-cement products
Assignee: Individual
•
Filing: 1953-05-28
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Granted: 1957-01-22
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Expires: 1973-05-28
Abstract
No abstract record available.
Inventors
- 👤 Phillip S Bettoli
- 👤 George L Brown
- 👤 Clarence R Eckert
- 👤 Benjamin B Kine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:16
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
77 words
AS AN ARTICLE OF MANUFACTURE, A FORMED PRODUCT COMPRISING AN ASBESTOS-CEMENT COMPOSITION HAVING ITS SURFACE COATED WITH A WATER-INSOLUBLE COPOLYMER CONTAINING, IN THE POLYMER MOLECULE, A LOWER ALKYL ESTER OF AN ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC, METHACRYLIC, AND ITACONIC ACIDS, AND 0.25 TO 6 MOLAR PERCENT OF CARBOXYL-CONTAINING MONOMERIC UNITS DERIVED FROM AT LEAST ONE MEMBERS OF THE CLASS CONSISTING OF ARCYLIC, METHACRYLIC, AND ITACONIC ACIDS, SAID COPOLYMER BEING CROSSLINKED BY A POLYVALENT METAL.
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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) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |