US2790819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trichlorophenylacetonitriles
Assignee: Monsanto Chemicals Ltd
•
Filing: 1954-10-07
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Granted: 1957-04-30
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Expires: 1974-10-07
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Godfrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:51
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/01; C07C255/32; C07C255/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A POLYCHLOROPHENYLACETONITRILE CONSISTING ESSENTIALLY IN THE COMPOSITE CYANATION PRODUCT OF MIXED POLYCHLOROBENZYL CHLORIDES PREPARED BY CHLORINATING TOLUENE IN THE RING UNTIL THE GAIN IN WEIGHT CORRESPONDS TO THAT CALCULATED FOR TRICHLOROTOLUENE, THEN CHLORINATING IN THE SIDE CHAIN UNTIL THE GAIN IN WEIGHT CORRESPONDS TO THAT CALCULATED FOR TRICHLOROBENZYL CHORIDE.
Claim 2
Dependent Claim
49 words
A POLYCHLOROPHENYLACETONITRILE CONSISTING ESSENTIALLY IN THE COMPOSITE CYANATION PRODUCT OF MIXED POLYCHLOROBENZYL CHLORIDES PREPARED BY CHLORINATING TOLUENE IN THE RING UNTIL THE GAIN IN WEIGHT CORRESPONDS TO THAT CALCULATED FOR TRICHLOROTOLUENE, THEN CHLORINATING IN THE SIDE CHAIN UNTIL THE GAIN IN WEIGHT CORRESPONDS TO THAT CALCULATED FOR TRICHLOROBENZYL CHORIDE.
References Cited (Backward Citations)
US2444905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |