Patent US2803676A successfully refreshed from Google Patents.
US2803676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trichloroethylene stabilized with propargyl alcohol and pyrrole
Assignee: Dow Chemical Co
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Filing: 1954-04-20
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Granted: 1957-08-20
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Expires: 1974-04-20
Abstract
No abstract record available.
Inventors
- 👤 Gordon G Willis
- 👤 Claiborne A Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:41
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
TRICHLOROETHYLENE CONTAINING FROM 0.005 TO 1.0 PERCENT OF PROPARGYL ALCOHOL AND FROM 0.005 TO 091 PERCENT PYRROLE.
Claim 2
Dependent Claim
17 words
TRICHLOROETHYLENE CONTAINING FROM 0.005 TO 1.0 PERCENT OF PROPARGYL ALCOHOL AND FROM 0.005 TO 091 PERCENT PYRROLE.
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |