US3097150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Irradiated, cross-linked polyethylene copolymer
Assignee: WR Grace and Co
•
Filing: 1955-06-24
•
Granted: 1963-07-09
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Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 William C Rainer
- 👤 Edward M Redding
- 👤 Joseph J Hitov
- 👤 Arthur W Sloan
- 👤 William D Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:36
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/28; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PROCESS COMPRISING IRRADIATING NORMALLY SOLID POLYETHYLENE AT A DOSAGE OF AT LEAST ABOUT 4X10**6 REP ADMIXED WITH POLYISOBUTYLENE TO FORM A CROSS-LINKED COPOLYMER.
Claim 2
Dependent Claim
24 words
A PROCESS COMPRISING IRRADIATING NORMALLY SOLID POLYETHYLENE AT A DOSAGE OF AT LEAST ABOUT 4X10**6 REP ADMIXED WITH POLYISOBUTYLENE TO FORM A CROSS-LINKED COPOLYMER.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |