Patent US1487903A successfully refreshed from Google Patents.
Patent US2851448A successfully refreshed from Google Patents.
US2851448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpolymers and method of making same
Assignee: Monsanto Chemicals Ltd
•
Filing: 1953-12-07
•
Granted: 1958-09-09
•
Expires: 1973-12-07
Abstract
No abstract record available.
Inventors
- 👤 Robert J Slocombe
- 👤 George L Wesp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:58
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F16/00; C08F16/36; C08F20/00; C08F20/62; C08F212/00; C08F212/02; C08F212/04; C08F212/06; C08F212/08; C08F212/10; C08F220/10; C08F220/12; C08F220/44; Y; Y10; Y10S; Y10S526/00; Y10S526/937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A CLEAR TERPOLYMER PREPARED BY FREE-RADICAL-INITIATED BATCH POLYMERIZATION OF A MONOMERIC MIXTURE CONSISTING OF (A) A MONOMER SELECTED FROM THE GROUP CONSISTING OF SYTRENE, VINYLTOLUENE, AND VINYLXYLENE, (B) AN ALKYL METHACRYLATE, AND (C) A MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, DIALKYL FUMARATE, MONALKYL FUMARATE, MONOALKYL MALEATE, THE PROPORTIONS OF THE THREE MONOMERS IN SAID MONOMERIC MIX-
Claim 2
Dependent Claim
61 words
A CLEAR TERPOLYMER PREPARED BY FREE-RADICAL-INITIATED BATCH POLYMERIZATION OF A MONOMERIC MIXTURE CONSISTING OF (A) A MONOMER SELECTED FROM THE GROUP CONSISTING OF SYTRENE, VINYLTOLUENE, AND VINYLXYLENE, (B) AN ALKYL METHACRYLATE, AND (C) A MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID, METHACRYLIC ACID, DIALKYL FUMARATE, MONALKYL FUMARATE, MONOALKYL MALEATE, THE PROPORTIONS OF THE THREE MONOMERS IN SAID MONOMERIC MIX-
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |