Patent US3221044A successfully refreshed from Google Patents.
US3221044A
Expired / Lapsed
US
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Esters of 4,5,6-trichloroisophthalic acid
Assignee: Hooker Chemical Corp
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Filing: 1962-08-06
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Granted: 1965-11-30
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Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 Paul E Hoch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:52
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/42; C07; C07C; C07C51/00; C07C51/093; C07C51/58; C07C51/60; C08F; C08F18/00; C08F18/20; C08G63/00; C08G63/68; C08G63/682; C08G63/6824
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A DIESTER OF 4,5,6-TRICHLOROISOPHTHALIC ACID AND A MONO-UNSATURATED, LOWER ALIPHATIC ALCOHOL AND 1 TO 2 HYDROXYL GROUPS.
Claim 2
Dependent Claim
17 words
A DIESTER OF 4,5,6-TRICHLOROISOPHTHALIC ACID AND A MONO-UNSATURATED, LOWER ALIPHATIC ALCOHOL AND 1 TO 2 HYDROXYL GROUPS.
References Cited (Backward Citations)
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US1591245A
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US2318684A
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US2433616A
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US2462601A
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US2814648A
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US2823230A
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US2676187A
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US2791608A
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US3014965A
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US2856425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |