US4516871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tabulated sheet protectors
Assignee: Individual
•
Filing: 1982-07-29
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Granted: 1985-05-14
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Expires: 2002-07-29
Abstract
Abstract A sheet protector formed of upper and lower layers of substantially transparent plastic material. A pair of complementary tabs each laterally extending from the edges of the respective layers are integrally formed therewith. Heat sealing is utilized for securing together at least some of the peripheries of the layers as well as the matching tabs. An opening is provided to define in combination with the layers a receiving pocket whereby a sheet may be inserted in the pocket. A looseleaf type binder is provided for holding a plurality of the sheet protectors. The tab positions of the respective sheet protectors in the binder are sequentially indexed with respect to each other to provide a set of position selectable sheet protectors.
Inventors
- 👤 Ervin Leitman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:23
CPC Classifications
B; B42; B42F; B42F21/00; B42F7/00; B42F7/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
A sheet protector, comprising: upper and lower layers of substantially transparent plastic material; a pair of complementary tabs, each tab laterally extending from the edge of a respective layer and integrally formed therewith, each tab comprising an identification means thereon; a heat sealed indent securing together at least a portion of the peripheries of said layers; a separate heat sealed indent which forms said indentification means on said tabs, and opening means defining a pocket in combination with said layers, whereby a sheet may be inserted in said pocket.
Claim 2
Dependent Claim
89 words
A sheet protector, comprising: upper and lower layers of substantially transparent plastic material; a pair of complementary tabs, each tab laterally extending from the edge of a respective layer and integrally formed therewith, each tab comprising an identification means thereon; a heat sealed indent securing together at least a portion of the peripheries of said layers; a separate heat sealed indent which forms said indentification means on said tabs, and opening means defining a pocket in combination with said layers, whereby a sheet may be inserted in said pocket.
Claim 3
Dependent Claim
30 words
A sheet protector as in claim 1, wherein said tabs are suitably indexed along the respective edges of said layers to identify the sheet protector by its respective tab position.
Claim 4
Dependent Claim
18 words
A sheet protector as in claim 1, wherein said layers have a satin finish to avoid reflectivity therefrom.
Claim 5
Dependent Claim
19 words
A sheet protector as in claim 1, wherein said sealing means secures together only the peripheries of said tabs.
Claim 6
Dependent Claim
31 words
A sheet protector as in claim 1, wherein said layers are substantially rectangular, said sealing means securing together three peripheral edges of said layers, and wherein the fourth edges are unsealed.
Claim 7
Dependent Claim
31 words
A sheet protector as in claim 5, wherein the fourth edges of said layers are displaced with respect to each other to facilitate insertion of a sheet between said unsealed edges.
Claim 8
Dependent Claim
35 words
A plurality of sheet protectors as in claim 1, wherein the tab positions of the respective sheet protectors are sequentially indexed with respect to each other to provide a set of position selectable sheet protectors.
Claim 9
Dependent Claim
23 words
Sheet protectors as in claim 7, wherein each tab is identified with a unique alphanumeric indicia whereby said tabs form an alphabetic index.
Claim 10
Dependent Claim
28 words
A sheet protector as in claim 1, comprising a selvage formed along one edge of said sheet protector, a heat sealed indent separating said selvage from said pocket.
Claim 11
Dependent Claim
49 words
A sheet protector as in claim 9, and comprising a plurality of holes formed through said selvage for receiving the rings of a binder, the peripheral edges of said holes being heat sealed, with the heat sealed peripheral edges of the holes forming an integral reinforcement of the holes.
Claim 12
Dependent Claim
26 words
A sheet protector as in claim 9, and comprising indented shoulders formed at the opposing ends of said selvage to accommodate release levers in the binder.
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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) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |