Patent US1730926A successfully refreshed from Google Patents.
Patent US3042681A successfully refreshed from Google Patents.
US3042681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulant coating comprising polyvinyl alcohol, asbestos, cement and aggregate
Assignee: Steel City Industries Inc
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Filing: 1959-05-25
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Granted: 1962-07-03
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Expires: 1979-05-25
Abstract
No abstract record available.
Inventors
- 👤 Robert C Sefton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:25
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B28/145; C04B28/146; C04B2111/00; C04B2111/00474; C04B2111/00482; C04B2111/20; C04B2111/28; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
AN ANSULANT COATING COMPRISING POLYVINYL ALCOHOL ABOUT 0.5% TO 2.5%, ASBESTOS ABOUT 7.5% TO 16%, GYPSUM ABOUT 30% TO 50%, PORTLAND CEMENT ABOUT 5.5% TO 13.5% AND LIGHT WEIGHT AGGREGATE ABOUT 25% TO 40%,
Claim 2
Dependent Claim
34 words
AN ANSULANT COATING COMPRISING POLYVINYL ALCOHOL ABOUT 0.5% TO 2.5%, ASBESTOS ABOUT 7.5% TO 16%, GYPSUM ABOUT 30% TO 50%, PORTLAND CEMENT ABOUT 5.5% TO 13.5% AND LIGHT WEIGHT AGGREGATE ABOUT 25% TO 40%,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |