Patent US3800515A successfully refreshed from Google Patents.
US3800515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exchange packing element
Assignee: Individual
•
Filing: 1971-05-28
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Granted: 1974-04-02
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Expires: 1991-05-28
Abstract
Abstract A moisture adsorbent packing is formed as a laminated cellular structure of paper in which the pores of the paper have been filed with an inorganic moisture adsorbent substance, the packing being strengthened and reenforced using some minor hard resin coating at the cellular inlets and outlets of the packing without, however, coating of the moisture adsorbent surfaces.
Inventors
- 👤 G Asker
- 👤 M Hubscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:11
CPC Classifications
B; B01; B01D; B01D15/00; B01D53/00; B01D53/02; B01D53/26; B01D53/28; B01J; B01J19/00; B01J19/32; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/183; B01J47/00; B01J47/018; F; F28; F28D; F28D19/00; F28D19/04; F28D19/041; F28D19/042; F28F; F28F25/00; F28F25/02; F28F25/08; B01J2219/00; B01J2219/32; B01J2219/322; B01J2219/32203; B01J2219/32206; B01J2219/3221; B01J2219/32213; B01J2219/324; B01J2219/32458; B01J2219/32483
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
A moisture adsorbent cellular packing as defined in claim 1 where the body comprises an assembly of a corrugated sheet and a plane sheet, only said plane sheet having an adhesive coating bonding said uncoated moisture adsorbent corrugated cylindrical coiled sheet into a laminated body.
References Cited (Backward Citations)
US2038071A
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US2919765A
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US3020977A
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US3398510A
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |