Patent US3270067A successfully refreshed from Google Patents.
US3270067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical process and products produced thereby
Assignee: Merck and Co Inc
•
Filing: 1962-07-12
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Granted: 1966-08-30
•
Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Norman L Wendler
- 👤 Taub David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:17
CPC Classifications
C; C07; C07C; C07C33/00; C07C33/05; C07C1/00; C07C1/32; C07C1/325; C07C1/326; C07C13/00; C07C13/28; C07C13/32; C07C13/54; C07C13/547; C07C13/605; C07C13/615; C07C35/00; C07C35/22; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/30; C07C2603/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
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US2082946A
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US2540157A
Cited
US2625571A
Cited
US2768985A
Cited
US2744149A
Cited
US2901517A
Cited
US3108141A
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US2917553A
Cited
US3189657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |