US3493538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discoloration inhibitors for polyethylene
Assignee: Monsanto Co
•
Filing: 1966-11-30
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Granted: 1970-02-03
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Expires: 1986-11-30
Abstract
No abstract record available.
Inventors
- 👤 Ival O Salyer
- 👤 Harry P Holladay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:36
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/04; C08K5/13; C08K5/5313; C08L; C08L23/00; C08L23/02; C08L23/16; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2230371A
Cited
US2985617A
Cited
US2997454A
Cited
BE626323A
Cited
GB982208A
Cited
US3398115A
Cited
US3406135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |