US2599743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of propylene polymers
Assignee: California Research LLC
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Filing: 1949-06-04
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Granted: 1952-06-10
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Expires: 1969-06-04
Abstract
No abstract record available.
Inventors
- 👤 Lloyd F Brooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:17
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A CONTINUOUS PROCESS FOR PRODUCING AN OLEFINIC HYDROCARBON MATERIAL CHARACTERIZED BY A 5% POINT ABOVE 350* F. AND A 90% POINT BELOW 525* F. ON A TRUE BOILING POINT DISTILLATION WHICH COMPRISES PROVIDING IN A REACTION ZONE A BODY OF LIQUID PHOSPHORIC ACID HAVING A CONCENTRATION IN THE RANGE 103-110% CALCULATED AS ORTHOPHOSPHORIC ACID, INTIMATELY CONTACTING WITH SAID ACID A LIQUID OLEFINIC HYDROCARON FRACTION SEPARATED FROM THE REACTION PRODUCT OF A CATALYTIC
Claim 2
Dependent Claim
72 words
A CONTINUOUS PROCESS FOR PRODUCING AN OLEFINIC HYDROCARBON MATERIAL CHARACTERIZED BY A 5% POINT ABOVE 350* F. AND A 90% POINT BELOW 525* F. ON A TRUE BOILING POINT DISTILLATION WHICH COMPRISES PROVIDING IN A REACTION ZONE A BODY OF LIQUID PHOSPHORIC ACID HAVING A CONCENTRATION IN THE RANGE 103-110% CALCULATED AS ORTHOPHOSPHORIC ACID, INTIMATELY CONTACTING WITH SAID ACID A LIQUID OLEFINIC HYDROCARON FRACTION SEPARATED FROM THE REACTION PRODUCT OF A CATALYTIC
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |