Patent US2983756A successfully refreshed from Google Patents.
US2983756A
Expired / Lapsed
US
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Aliphatic amino derivatives of bis (p-dialkylaminophenyl) methane
Assignee: Honeywell International Inc
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Filing: 1958-05-13
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Granted: 1961-05-09
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Expires: 1978-05-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Kranz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:01
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/135; B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/136; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/36; C07D213/38; C07D295/125; C07D295/13; C09; C09B; C09B11/00; C09B11/02; Y; Y10; Y10S; Y10S428/00; Y10S428/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
N-BIS(P-DIALKYLAMINOARYL)METHYL AMINE HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
N-BIS(P-DIALKYLAMINOARYL)METHYL AMINE HAVING THE FORMULA
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) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |