Patent US3242104A successfully refreshed from Google Patents.
US3242104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing 1, 2-epoxides and tetrahydropyrans
Assignee: BASF Schweiz AG
•
Filing: 1961-03-13
•
Granted: 1966-03-22
•
Expires: 1981-03-13
Abstract
No abstract record available.
Inventors
- 👤 Brueschweiler Hans
- 👤 Zuppinger Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:39
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/14; C08G59/1433; C08G59/40; C08G59/4007; C08G59/4078; C08G59/68; C08G59/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS OF REACTING (1) A 1:2-EPOXIDE COMPOUND HAVING MORE THAN 1 EPOXY GROUP PER MOLECULE AND HAVING A 1:2-EPOXIDE EQUIVALENCY GREATER THAN 1 WITH (2) PER EACH 1:2-EPOXIDE EQUIVALENT OF THE 1:2-EPOXIDE COMPOUND (1) 0.01 TO 1 MOL OF A SIX-MEMBERED CYCLIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF TETRAHYDROPYRANES OF THE FORMULA
Claim 2
Dependent Claim
54 words
A PROCESS OF REACTING (1) A 1:2-EPOXIDE COMPOUND HAVING MORE THAN 1 EPOXY GROUP PER MOLECULE AND HAVING A 1:2-EPOXIDE EQUIVALENCY GREATER THAN 1 WITH (2) PER EACH 1:2-EPOXIDE EQUIVALENT OF THE 1:2-EPOXIDE COMPOUND (1) 0.01 TO 1 MOL OF A SIX-MEMBERED CYCLIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF TETRAHYDROPYRANES OF THE FORMULA
References Cited (Backward Citations)
FR898269A
Cited
GB558106A
Cited
US2462031A
Cited
US2644823A
Cited
US2731444A
Cited
US2782233A
Cited
US2824083A
Cited
US2838508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |