Patent US2692275A successfully refreshed from Google Patents.
US2692275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 1, 8-diisocyanato-p-menthane
Assignee: Rohm and Haas Co
•
Filing: 1953-01-23
•
Granted: 1954-10-19
•
Expires: 1973-01-23
Abstract
No abstract record available.
Inventors
- 👤 Newman M Bortnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:26
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PROCESS FOR THE PREPARATION OF 1,8-DIISOCYANATO-P-MENTHANE OF THE FORMULA
Claim 2
Dependent Claim
10 words
A PROCESS FOR THE PREPARATION OF 1,8-DIISOCYANATO-P-MENTHANE OF THE FORMULA
References Cited (Backward Citations)
US2409712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |