US3051693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of polymerizing acetylenic compounds
Assignee: Wyeth Holdings LLC
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Filing: 1960-01-29
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Granted: 1962-08-28
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Expires: 1980-01-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Leto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:44
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD OF POLYMERIZING A POLYMERIZABLE COMPOUND HAVING ACETYLENIC UNSATURATION COMPRISING POLYMERIZING SAID COMPOUND AT A TEMPERATURE BETWEEN ABOUT 20*C. AND 250*C. IN A LIQUID REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF WATER AND AN INERT ORGANIC SOLVENT, WHILE SAID POLYMERIZABLE COMPOUND IS IN CATALYZED RELATIONSHIP WITH A CATALYST COMPRISING A CARBONY OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDDENUM, CHROMIUM, AND TUNGSTEN, WHEREIN THE RATIO IN PARTS BY WEIGHT OF SAID CATALYST TO SAID ACETYLENIC COMPOUND TO SAID SOLVENT IS 0.01-10:1-50:100 RESPECTIVELY.
Claim 2
Independent Claim
86 words
A METHOD OF POLYMERIZING A POLYMERIZABLE COMPOUND HAVING ACETYLENIC UNSATURATION COMPRISING POLYMERIZING SAID COMPOUND AT A TEMPERATURE BETWEEN ABOUT 20*C. AND 250*C. IN A LIQUID REACTION MEDIUM SELECTED FROM THE GROUP CONSISTING OF WATER AND AN INERT ORGANIC SOLVENT, WHILE SAID POLYMERIZABLE COMPOUND IS IN CATALYZED RELATIONSHIP WITH A CATALYST COMPRISING A CARBONY OF A METAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDDENUM, CHROMIUM, AND TUNGSTEN, WHEREIN THE RATIO IN PARTS BY WEIGHT OF SAID CATALYST TO SAID ACETYLENIC COMPOUND TO SAID SOLVENT IS 0.01-10:1-50:100 RESPECTIVELY.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |