US2815377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Di-guanyl hydrazones
Assignee: Schenley Industries Inc
•
Filing: 1954-03-25
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Granted: 1957-12-03
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Expires: 1974-03-25
Abstract
No abstract record available.
Inventors
- 👤 Meiser Werner
- 👤 Domagk Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:02
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/44; C07D233/52; C07C; C07C281/00; C07C281/16; C07C281/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
AS A NEW CHEMICAL COMPOUND A DI-FUANYL HYDRAZONE OF A DI-PHENOXY DIALKYL EHTER DI-ALDEHYDR IN WHICH THE DI-ALKYL ETHER PORTION HAS FORM 2 TO 12 CARBON ATOMS
Claim 2
Dependent Claim
27 words
AS A NEW CHEMICAL COMPOUND A DI-FUANYL HYDRAZONE OF A DI-PHENOXY DIALKYL EHTER DI-ALDEHYDR IN WHICH THE DI-ALKYL ETHER PORTION HAS FORM 2 TO 12 CARBON ATOMS
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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |