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Patent US3212873A successfully refreshed from Google Patents.
US3212873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Di-(n-alkoxy) amides of 2, 3, 5, 6-tetrachloroterephthalic acid
Assignee: Velsicol Chemical LLC
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Filing: 1962-07-27
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Granted: 1965-10-19
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Expires: 1982-07-27
Abstract
No abstract record available.
Inventors
- 👤 Sidney B Richter
- 👤 Alfred A Levin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:07
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
39 words
A METHOD OF DESTROYING UNDERSIRABLE PLANTS WHICH COMPRISES CONTACTING SAID PLANTS WITH A HERBICIDAL COMPOSITION COMPRISING AN INERT CARRIER, AND AS AN ESSENTIAL ACTIVE INGREDIENT IN A QUANTITY WHICH IS INJURIOUS TO SAID PLANTS, A COMPOUND OF CLAIM 1.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |