US2802813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpene resin
Assignee: Honeywell International Inc
•
Filing: 1954-01-06
•
Granted: 1957-08-13
•
Expires: 1974-01-06
Abstract
No abstract record available.
Inventors
- 👤 James B Maguire
- 👤 George M Fohlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:12
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A METHOD FOR POLYMERIZING ALPHA PINENE WHICH COMPRISES CONTINOUSLY CIRCULATING A MIXTURE OF ALPHA PINENE, A LIQUID ORGANIC SOLVENT MISCIBLE WITH THE PIENE, AND A FRIEDEL-CRAFTS CATALYST THROUGH A COOLING ZONE ADAPTED TO MAINTAIN THE TEMPERATURE OF THE CIRCULATING MIXTURE WITHIN THE RANGE OF 0.20*C., MAINTAINING SAID MIXTURE IN THE CIRCULATING STREAM FOR AN AVERAGE RESIDENCE TIME OF ABOUT 10-35 MINUTES, WITHDRAWINGH A PORTION OF THE CIRCULATING MIXTURE, ADDING ALPHA PIENE, ORGANIC SOLVENT AND FRIEDEL-CRAFTS CATALYST TO THE CIRCULATING MIXTURE, CONTINOUSLY PASSING SAID WITHDRAWN PORTION OF THE CIRCULATING MIXTURE TO A RETENTION ZONE MAINTAINING THE MIXTURE
Claim 2
Independent Claim
96 words
A METHOD FOR POLYMERIZING ALPHA PINENE WHICH COMPRISES CONTINOUSLY CIRCULATING A MIXTURE OF ALPHA PINENE, A LIQUID ORGANIC SOLVENT MISCIBLE WITH THE PIENE, AND A FRIEDEL-CRAFTS CATALYST THROUGH A COOLING ZONE ADAPTED TO MAINTAIN THE TEMPERATURE OF THE CIRCULATING MIXTURE WITHIN THE RANGE OF 0.20*C., MAINTAINING SAID MIXTURE IN THE CIRCULATING STREAM FOR AN AVERAGE RESIDENCE TIME OF ABOUT 10-35 MINUTES, WITHDRAWINGH A PORTION OF THE CIRCULATING MIXTURE, ADDING ALPHA PIENE, ORGANIC SOLVENT AND FRIEDEL-CRAFTS CATALYST TO THE CIRCULATING MIXTURE, CONTINOUSLY PASSING SAID WITHDRAWN PORTION OF THE CIRCULATING MIXTURE TO A RETENTION ZONE MAINTAINING THE MIXTURE
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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |