Patent US2621205A successfully refreshed from Google Patents.
US2621205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nitration of olefins
Assignee: Union Oil Company of California
•
Filing: 1949-08-15
•
Granted: 1952-12-09
•
Expires: 1969-08-15
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Doumani
- 👤 Clarence S Coe
- 👤 Jr Edward C Attane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:10
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/23; C10L1/231; C07; C07C; C07C201/00; C07C201/06; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE METHOD OF MAKING NITROGEN OXIDE ADDITION PRODUCTS OF CYCLO-OLEFINES WHICH COMPRISES FORMING A SOLUTION OF A CYCLO-MONO-OLEFINE IN A SOLVENT CONSISTING ESSENTIALLY OF THE CYCLO-ALIPHATIC HYDROCARBON CORRESPONDING TO SAID MONOOLEFINE, FORMING A SOLUTION OF NITROGEN TETROXIDE IN A SOLVENT CONSISTING ESSENTIALLY OF THE SATURATED CYCLO-ALIPHATIC HYDROCARBON CORRESPONDING TO SAID CYCLO-MONO-OLEFINE, SEPARATELY HEATING SAID SOLUTIONS TO A TEMPERATURE BETWEEN ABOUT 40* C. AND ABOUT 300* C. AND UNDER A PRESSURE BETWEEN
Claim 2
Independent Claim
71 words
THE METHOD OF MAKING NITROGEN OXIDE ADDITION PRODUCTS OF CYCLO-OLEFINES WHICH COMPRISES FORMING A SOLUTION OF A CYCLO-MONO-OLEFINE IN A SOLVENT CONSISTING ESSENTIALLY OF THE CYCLO-ALIPHATIC HYDROCARBON CORRESPONDING TO SAID MONOOLEFINE, FORMING A SOLUTION OF NITROGEN TETROXIDE IN A SOLVENT CONSISTING ESSENTIALLY OF THE SATURATED CYCLO-ALIPHATIC HYDROCARBON CORRESPONDING TO SAID CYCLO-MONO-OLEFINE, SEPARATELY HEATING SAID SOLUTIONS TO A TEMPERATURE BETWEEN ABOUT 40* C. AND ABOUT 300* C. AND UNDER A PRESSURE BETWEEN
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |