Patent US3000978A successfully refreshed from Google Patents.
US3000978A
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Novel composition
Assignee: PPG Industries Inc
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Filing: 1959-11-12
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Granted: 1961-09-19
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Expires: 1979-11-12
Abstract
No abstract record available.
Inventors
- 👤 Robert H Fredenburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:49
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02854; C23G5/02861; C23G5/02864; C23G5/02867; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
METHYLCHLOROFORM CONTAINING TERTIARY-BUTYL ALCOHOL IS STABILIZING CONCENTRATION.
Claim 2
Dependent Claim
7 words
METHYLCHLOROFORM CONTAINING TERTIARY-BUTYL ALCOHOL IS STABILIZING CONCENTRATION.
References Cited (Backward Citations)
US2371644A
Cited
US2407149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |