Patent US2842523A successfully refreshed from Google Patents.
US2842523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beta-amino lower-alkyl carbamates and resinous reaction products thereof
Assignee: Dow Chemical Co
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Filing: 1954-08-12
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Granted: 1958-07-08
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Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 William F Tousignant
- 👤 Jr Thomas Houtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:45
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/18; C07D263/20; C07D263/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A BETA-AMINO LOWER-ALKYL CARBAMATE SELECTED FROM THE CLASS CONSISTING OF BETA-AMINO-ETHYL CARBAMATE AND BETA-AMINO-ETHYL CARBAMATES HAVING FROM 1 TO 2 ALKYL GROUPS OF FROM 1 TO 2 CARBON ATOMS EACH ATTACHED DIRECTLY TO THE ETHYL RADICAL.
Claim 2
Dependent Claim
36 words
A BETA-AMINO LOWER-ALKYL CARBAMATE SELECTED FROM THE CLASS CONSISTING OF BETA-AMINO-ETHYL CARBAMATE AND BETA-AMINO-ETHYL CARBAMATES HAVING FROM 1 TO 2 ALKYL GROUPS OF FROM 1 TO 2 CARBON ATOMS EACH ATTACHED DIRECTLY TO THE ETHYL RADICAL.
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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |