US2555255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of recovering terpene polymers from solution
Assignee: Pennsylvania Industrial Chemical Corp
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Filing: 1949-09-02
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Granted: 1951-05-29
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Expires: 1969-09-02
Abstract
No abstract record available.
Inventors
- 👤 Edward W Suhanin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF RECOVERING LIGHT COLORED TERPENE RESIN FREE FROM INCLUDED SPECKS AND CHLORINE CONTAMINATION FROM A SOLUTION OF HARD TERPENE RESIN POLYMERS FORMED BY THE CATALYTIC ACTION OF ALUMINUM CHLORIDE ON A TERPENE STARTING LIQUID WHICH COMPRISES TREATING THE SAID SOLUTION BY SIMULTANEOUS CONTACT THEREOF WITH ZINC AND WITH FULLER''S EARTH AT A TEMPERATURE WITHIN THE APPROXIMATE RANGE OF 160* C. TO 180 C., REMOVING ACIDIC COMPOUNDS FROM THE SAID POLYMER SOLUTION, FILTERING THE POLYMER SOLUTION SO TREATED, AND DISTILLING THE FILTRATE SO OBTAINED FOR THE RECOVERY OF HARD TERPENE RESIN POLYMERS THEREFROM.
Claim 2
Independent Claim
94 words
THE METHOD OF RECOVERING LIGHT COLORED TERPENE RESIN FREE FROM INCLUDED SPECKS AND CHLORINE CONTAMINATION FROM A SOLUTION OF HARD TERPENE RESIN POLYMERS FORMED BY THE CATALYTIC ACTION OF ALUMINUM CHLORIDE ON A TERPENE STARTING LIQUID WHICH COMPRISES TREATING THE SAID SOLUTION BY SIMULTANEOUS CONTACT THEREOF WITH ZINC AND WITH FULLER''S EARTH AT A TEMPERATURE WITHIN THE APPROXIMATE RANGE OF 160* C. TO 180 C., REMOVING ACIDIC COMPOUNDS FROM THE SAID POLYMER SOLUTION, FILTERING THE POLYMER SOLUTION SO TREATED, AND DISTILLING THE FILTRATE SO OBTAINED FOR THE RECOVERY OF HARD TERPENE RESIN POLYMERS THEREFROM.
References Cited (Backward Citations)
US2060404A
Cited
US2349210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |