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Patent US3437522A successfully refreshed from Google Patents.
US3437522A
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US
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Process for removing adhesives from polyolefin film by immersion in sulfuric acid
Assignee: GT Schjeldahl Co
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Filing: 1965-02-19
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Granted: 1969-04-08
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Expires: 1985-02-19
Abstract
No abstract record available.
Inventors
- 👤 Herbert J Fick
- 👤 Roger W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:03
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; C; C09; C09D; C09D9/00; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/08; H05; H05K; H05K3/00; H05K3/22; H05K3/28; H05K3/288; H05K3/38; H05K3/386; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/034; H05K1/0393; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0145; H05K2201/015; H05K2201/0158; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; H05K2203/00; H05K2203/07; H05K2203/0756; H05K2203/0769; H05K2203/0779; H05K2203/0786; H05K2203/0789; H05K3/02; H05K3/06; Y; Y10; Y10S; Y10S428/00; Y10S428/901
Claims Analysis
Total Claims: 0
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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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |