US3990872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorbent package
Assignee: Multiform Desiccants Inc
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Filing: 1974-11-06
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Granted: 1976-11-09
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Expires: 1994-11-06
Abstract
Abstract An adsorbent package comprising spunbonded olefin wall means, and adsorbent means confined by said wall means, said wall means being fabricated from planar sheet material formed into tubular shape and having a heat and pressure sealed seam which causes the spunbonded olefin material to become transparent in the area of the seam to permit viewing of the adsorbent therethrough.
Inventors
- 👤 John S. Cullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:06
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0415; B01D2253/00; B01D2253/20; B01D2253/202; B01D2257/00; B01D2257/80; Y; Y10; Y10S; Y10S210/00; Y10S210/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
An adsorbent package comprising a package fabricated entirely from virtually opaque spunbonded olefin sheet which will pass gases but not water and which is folded over on itself to produce a tubular member having first, second and third overlapping sheet portions, a first heat sealed seam joining said first overlapping sheet portion centrally on said package and providing a transparent area on said package, second and third spaced heat sealed seams joining said second and third overlapping sheet portions to provide end seams on said package whereby said first, second and third seams cause said package to be completely enclosed, and adsorbent completely contained within said package with a portion of said adsorbent being in contiguous relationship to said first seam whereby said adsorbent can be viewed from outside of said package through the transparent area provided by said first seam.
Claim 2
Dependent Claim
141 words
An adsorbent package comprising a package fabricated entirely from virtually opaque spunbonded olefin sheet which will pass gases but not water and which is folded over on itself to produce a tubular member having first, second and third overlapping sheet portions, a first heat sealed seam joining said first overlapping sheet portion centrally on said package and providing a transparent area on said package, second and third spaced heat sealed seams joining said second and third overlapping sheet portions to provide end seams on said package whereby said first, second and third seams cause said package to be completely enclosed, and adsorbent completely contained within said package with a portion of said adsorbent being in contiguous relationship to said first seam whereby said adsorbent can be viewed from outside of said package through the transparent area provided by said first seam.
Claim 3
Dependent Claim
16 words
An adsorbent package as set forth in claim 1 wherein said olefin is high density polyethylene.
Claim 4
Dependent Claim
41 words
An adsorbent package comprising spunbonded olefin wall means which will pass gases but not water, and adsorbent means confined by said wall means, said wall means including a fused area which is transparent to permit viewing of said adsorbent means therethrough.
Claim 5
Dependent Claim
41 words
An adsorbent package comprising spunbonded olefin wall means which will pass gases but not water, and adsorbent means confined by said wall means, said wall means including a fused area which is transparent to permit viewing of said adsorbent means therethrough.
Claim 6
Dependent Claim
45 words
An adsorbent package as set forth in claim 3 wherein said wall means comprise a tubular member, said tubular member being fabricated from planar sheet material having an overlapping portion which is fused to provide a seam which also is said transparent fused area. pg,10
Claim 7
Dependent Claim
48 words
An adsorbent package comprising supnbonded olefin wall means which will pass gases but not water, adsorbent means confined by said wall means, said wall means comprising a tubular member, and said tubular member including a fused area which is transparent to permit viewing of said adsorbent means therethrough.
Claim 8
Dependent Claim
48 words
An adsorbent package comprising supnbonded olefin wall means which will pass gases but not water, adsorbent means confined by said wall means, said wall means comprising a tubular member, and said tubular member including a fused area which is transparent to permit viewing of said adsorbent means therethrough.
Claim 9
Dependent Claim
16 words
An adsorbent package as set forth in claim 5 including sealed ends on said tubular member.
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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) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |