US3214455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charge-transfer compounds and their preparation
Assignee: EIDP Inc
•
Filing: 1961-10-16
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Granted: 1965-10-26
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Expires: 1981-10-16
Abstract
No abstract record available.
Inventors
- 👤 Blaine C Mckusick
- 👤 Webster Owen Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:03
CPC Classifications
C; C07; C07D; C07D305/00; C07D305/02; C07D305/10; C07D305/12; Y; Y10; Y10S; Y10S101/00; Y10S101/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF 1,1,2,3,4,4-HEXACYANO-2-BUTENE, THE GROUP IA,IB AND IIA METAL AND THE TETRA(LOWER ALKYL)AMMONIUM SALTS OF 1,1, 2,3,4,4-HEXACYANO-2-BUTENE, HEXACYANO-1,3-BUTADIENE, AND THE CHARGE-TRANSFER COMPOUNDS OF HEXACYANO-1,3-BUTADIENE WITH LEWIS BASES.
Claim 2
Dependent Claim
33 words
A COMPOUND SELECTED FROM THE CLASS CONSISTING OF 1,1,2,3,4,4-HEXACYANO-2-BUTENE, THE GROUP IA,IB AND IIA METAL AND THE TETRA(LOWER ALKYL)AMMONIUM SALTS OF 1,1, 2,3,4,4-HEXACYANO-2-BUTENE, HEXACYANO-1,3-BUTADIENE, AND THE CHARGE-TRANSFER COMPOUNDS OF HEXACYANO-1,3-BUTADIENE WITH LEWIS BASES.
References Cited (Backward Citations)
US2766246A
Cited
US3097221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |