US3697351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding hollow fibers to plastic resin supports by radiation grafting
Assignee: Dow Chemical Co
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Filing: 1969-01-15
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Granted: 1972-10-10
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Expires: 1989-01-15
Abstract
Abstract THE BOND BETWEEN A PLASTIC RESIN SUPPORT OR HEADER AND A HOLLOW FIBER EMBEDDED THEEIN IS IMNPROVED BY FORMING A GRAFT POLYMER BOND BETWEEN THE RESIN AND THE FIBER. THE GRAFT POLYMER BOND IS FORMED BY CURING THE RESIN WITH HIGH ENERGY RADIATION.
Inventors
- 👤 David E Harmer
- 👤 John R Jarema
- 👤 Douglas E Leng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:28
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/02; B01D63/021; B01D63/022; B01D63/0223; C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J7/00; C08J7/12; C08J7/16; C08J7/18
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |