Patent US3434220A successfully refreshed from Google Patents.
US3434220A
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Microwave drying process for synthetic polymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1967-10-10
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Granted: 1969-03-25
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Expires: 1987-10-10
Abstract
No abstract record available.
Inventors
- 👤 Eric O Forster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:51
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/06; C; C08; C08C; C08C3/00; C08F; C08F6/00; C08F6/008; B29C; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0855; B29K; B29K2021/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3145088A
Cited
US3277580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |