Patent US4729507A successfully refreshed from Google Patents.
US4729507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Easily openable reusable envelope
Assignee: Individual
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Filing: 1986-08-01
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Granted: 1988-03-08
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Expires: 2006-08-01
Abstract
Abstract An improved adhesive sealed envelope is provided with a tear away portion extending there across in an area of the back panel lying under the adhesive seal of the top flap when the envelope is sealed, the tear line defining the tear away portion being hidden by the top flap. The envelope is opened in the natural way by grasping the flap and pulling upwardly causing the envelope to open along the tear line, thereby creating a larger access opening.
Inventors
- 👤 Frank Y. H. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:04
CPC Classifications
B; B65; B65D; B65D27/00; B65D27/32; B65D27/38; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/80
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
In an easily openable envelope having a front wall panel, a rear wall panel, a top flap having an adhesive area for sealing to said rear wall panel, and a tear away portion defined by a tear line, the improvement wherein said tear away portion lies at the upper end of said rear wall panel with said tear line between said tear away portion and the remainder of said rear wall panel, said tear line extending across the central portion of said envelope a distance corresponding to at least half the length of said envelope, said tear line being located so that when said envelope is sealed said tear line is hidden by said top flap and the adhesive area of said top flap overlies at least a substantial part of said tear away portion; and further comprising: means permitting reuse of said envelope as a mailing envelope, said means comprising a second activatable adhesive on the bottom surface of said tear away portion, and a second tear away portion lying adjacent and beneath said first mentioned tear away portion.
Claim 2
Dependent Claim
180 words
In an easily openable envelope having a front wall panel, a rear wall panel, a top flap having an adhesive area for sealing to said rear wall panel, and a tear away portion defined by a tear line, the improvement wherein said tear away portion lies at the upper end of said rear wall panel with said tear line between said tear away portion and the remainder of said rear wall panel, said tear line extending across the central portion of said envelope a distance corresponding to at least half the length of said envelope, said tear line being located so that when said envelope is sealed said tear line is hidden by said top flap and the adhesive area of said top flap overlies at least a substantial part of said tear away portion; and further comprising: means permitting reuse of said envelope as a mailing envelope, said means comprising a second activatable adhesive on the bottom surface of said tear away portion, and a second tear away portion lying adjacent and beneath said first mentioned tear away portion.
Claim 3
Dependent Claim
19 words
An envelope according to claim 1 wherein said tear away portion extends substantially the entire length of said envelope.
Claim 4
Dependent Claim
23 words
An envelope according to claim 1 wherein the adhesive area of said flap corresponds generally to the area of said tear away portion.
Claim 5
Dependent Claim
21 words
An envelope according to claim 1 wherein said tear away portion is provided with a downwardly directed gripping or pull tab.
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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) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |