US2887445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polyethylene
Assignee: Monsanto Chemicals Ltd
•
Filing: 1954-01-20
•
Granted: 1959-05-19
•
Expires: 1974-01-20
Abstract
No abstract record available.
Inventors
- 👤 John D Calfee
- 👤 Lowell E Erbaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:22
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE PROCESS COMPRISING POLYMERIZING WHILE UNDER THE INFLUENCE OF HIGH-ENERGY IONIZING RADIATION A REACTION MIXTURE CONSISTING ESSENTIALLY OF A POLYMERIZABLE MATERIAL AND A COMPOUND SELECTED FROM THE CLASS CONSISTING OF AROMATIC AND CHLORINATED AROMATIC HYDROCARBONS IN SUFFICIENT AMOUNT TO PREVENT THE FORMATION OF AN UNPROCESSABLE CROSS-LINKED POLYMER, SAID POLYMERIZABLE MATERIAL BEING SELECTED FROM THE CLASS CONSISTING OF ETHYLENE AND ETHYLENE PLUS AT LEAST ONE OTHER UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, TO PRODUCE A NORMALLY-SOLID POLYMER PRODUCT.
Claim 2
Dependent Claim
75 words
THE PROCESS COMPRISING POLYMERIZING WHILE UNDER THE INFLUENCE OF HIGH-ENERGY IONIZING RADIATION A REACTION MIXTURE CONSISTING ESSENTIALLY OF A POLYMERIZABLE MATERIAL AND A COMPOUND SELECTED FROM THE CLASS CONSISTING OF AROMATIC AND CHLORINATED AROMATIC HYDROCARBONS IN SUFFICIENT AMOUNT TO PREVENT THE FORMATION OF AN UNPROCESSABLE CROSS-LINKED POLYMER, SAID POLYMERIZABLE MATERIAL BEING SELECTED FROM THE CLASS CONSISTING OF ETHYLENE AND ETHYLENE PLUS AT LEAST ONE OTHER UNSATURATED MONOMER COPOLYMERIZABLE THEREWITH, TO PRODUCE A NORMALLY-SOLID POLYMER PRODUCT.
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) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |