Patent US3850992A successfully refreshed from Google Patents.
US3850992A
Expired / Lapsed
US
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Aliphatic indanyl ethers
Assignee: Zoecon Corp
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Filing: 1971-07-20
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Granted: 1974-11-26
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Expires: 1991-07-20
Abstract
Abstract 1. A COMPOUND SELECTED FROM THOSE OF THE FOLLOWING FORMULA (A): R3-C(-R3)(-Z)-CH(-Z'')-(CH2)N-C(-W)(-R1)-CH(-W'')-(CH2)M-O-R WHEREIN, R IS INDAN-5-YL- M IS ZERO OR ONE; N IS ONE OR TWO; EACH OF R1, R2 AND R3 IS LOWER ALKYL; EACH OF W AND W'' IS HYDROGEN OR TOGETHER A CARBON-CARBON BOND; Z IS HYDROGEN, HYDROXY, LOWER ALKOXY, OR LOWER ALKYL; AND Z'' IS HYDROGEN OR TOGETHER WITH Z A CARBON-CARBON BOND, PROVIDED THAT WHEN M IS ZERO-THEN EACH OF W AND W'' IS HYDROGEN.
Inventors
- 👤 J Baum
- 👤 J Diekman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:32
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A COMPOUND SELECTED FROM THOSE OF THE FOLLOWING FORMULA (A):
Claim 2
Dependent Claim
10 words
A COMPOUND SELECTED FROM THOSE OF THE FOLLOWING FORMULA (A):
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |