US2836580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clear terpolymers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-12-07
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Granted: 1958-05-27
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Expires: 1973-12-07
Abstract
No abstract record available.
Inventors
- 👤 George L Wesp
- 👤 Robert J Slocombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:39
CPC Classifications
C; C08; C08F; C08F222/00; C08F222/10; C08F222/12; C08F222/14; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F214/00; C08F214/02; C08F214/04; C08F214/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A CLEAR TERPOLYMER PREPARED BY FREE-RADICAL-INITIATED BATCH POLYMERIZATION OF MONOMERIC MIXTURE CONSISTING OF (A) A DIALKYL FUMARATE, (B) A MONOMER SELECTED FROM THE GROUP CONSISTING OF STYRENE, VINYLTOLUENE, VINYLXYLENE, VINYL ACETATE, VINYL CHLORIDE, AND (C) A DIFFERENT MONOMER SELECTED FROM SAID GROUP, THE PROPORTIONS OF THE THREE MONOMERS IN SAID MONOMERIC MIXTURE BEING LIMITED TO THOSE IN THE AREA OF MIXTURES THAT PRODUCE SOLID CLEAR TERPOLYMER PRODUCTS, SAID AREA ENCOMPASSING THE LINE JOINING THE POLYMERIZATION AZEOTROPE COMPOSITION OF SAID DIALKYL FUMARATE AND THE PARTICULAR (B) ON THE ONE HAND AND SAID DIALKYL FUMARATE AND THE PARTICULAR (C) ON THE OTHER HAND AS PLOTTED ON AN EQUILATERAL TRIANGULAR COORDINATE GRAPH.
Claim 2
Dependent Claim
109 words
A CLEAR TERPOLYMER PREPARED BY FREE-RADICAL-INITIATED BATCH POLYMERIZATION OF MONOMERIC MIXTURE CONSISTING OF (A) A DIALKYL FUMARATE, (B) A MONOMER SELECTED FROM THE GROUP CONSISTING OF STYRENE, VINYLTOLUENE, VINYLXYLENE, VINYL ACETATE, VINYL CHLORIDE, AND (C) A DIFFERENT MONOMER SELECTED FROM SAID GROUP, THE PROPORTIONS OF THE THREE MONOMERS IN SAID MONOMERIC MIXTURE BEING LIMITED TO THOSE IN THE AREA OF MIXTURES THAT PRODUCE SOLID CLEAR TERPOLYMER PRODUCTS, SAID AREA ENCOMPASSING THE LINE JOINING THE POLYMERIZATION AZEOTROPE COMPOSITION OF SAID DIALKYL FUMARATE AND THE PARTICULAR (B) ON THE ONE HAND AND SAID DIALKYL FUMARATE AND THE PARTICULAR (C) ON THE OTHER HAND AS PLOTTED ON AN EQUILATERAL TRIANGULAR COORDINATE GRAPH.
References Cited (Backward Citations)
US2047398A
Cited
FR814093A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |