Patent US2512649A successfully refreshed from Google Patents.
US2512649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of isononanes
Assignee: United States Department of Commerce
•
Filing: 1947-07-29
•
Granted: 1950-06-27
•
Expires: 1967-07-29
Abstract
No abstract record available.
Inventors
- 👤 Frank L Howard
- 👤 Donald B Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:58
CPC Classifications
C; C07; C07C; C07C9/00; C07C9/14; C07C9/16; C07C1/00; C07C1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A METHOD FOR THE PRODUCTION OF HIGHLY BRACHED CHAIN HYDROCARBONS WHICH COMPRISES CO-POLYMERIZATION OF A SECONDARY AND A TERTIARY ALCOHOL, HYDROHALOGENATION OF THE OLEFINIC PRODUCTS THEREBY PRODUCED, AND THEREAFTER METHYLATING THE HYDROHALOGENATED OLEFINS.
Claim 2
Independent Claim
33 words
A METHOD FOR THE PRODUCTION OF HIGHLY BRACHED CHAIN HYDROCARBONS WHICH COMPRISES CO-POLYMERIZATION OF A SECONDARY AND A TERTIARY ALCOHOL, HYDROHALOGENATION OF THE OLEFINIC PRODUCTS THEREBY PRODUCED, AND THEREAFTER METHYLATING THE HYDROHALOGENATED OLEFINS.
References Cited (Backward Citations)
US2404927A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |