US4720423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package opening system
Assignee: 3M Co
•
Filing: 1986-08-25
•
Granted: 1988-01-19
•
Expires: 2006-08-25
Abstract
Abstract A multilayer strip having an adhesive between layers, the adhesive containing frangible microcapsules carrying a fragrant liquid therein, can be used as a tear strip for a package overwrap. Upon pulling the outward layer of said strip, the overwrap is opened and the fragrance is released.
Inventors
- 👤 Andrew D. Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:21
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/10; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D77/00; B65D77/22; B65D77/30; B65D77/32; B65D77/36; B32B2305/00; B32B2305/54; B32B2307/00; B32B2307/50; B32B2307/582; B32B2553/00; B65D2203/00; B65D2203/12; Y; Y10; Y10S; Y10S428/00; Y10S428/905; Y10S428/906; Y10S428/916; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307; Y10T428/14; Y10T428/1405; Y10T428/15; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249972; Y10T428/25
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
89 words
An article comprising an interior article, an overwrap, and a tear strip for opening said overwrap, said tear strip having two layers of material selected from the group consisting of polymeric film and paper secured by an adhesive layer associated with said tear strip, said two layers being in the form of (1) a tab to engage said tear strip or (2) the tear strip itself, the adhesive layer of said two layers of material containing frangible microcapsules having average diameters between 3 and 180 microns containing fragrance therein.
Claim 2
Dependent Claim
89 words
An article comprising an interior article, an overwrap, and a tear strip for opening said overwrap, said tear strip having two layers of material selected from the group consisting of polymeric film and paper secured by an adhesive layer associated with said tear strip, said two layers being in the form of (1) a tab to engage said tear strip or (2) the tear strip itself, the adhesive layer of said two layers of material containing frangible microcapsules having average diameters between 3 and 180 microns containing fragrance therein.
Claim 3
Dependent Claim
24 words
The article of claim 1 wherein the tear strip itself comprises two layers of material secured by an adhesive layer to said interior article.
Claim 4
Dependent Claim
14 words
The article of claim 1 wherein said interior article comprises a package of cigarettes.
Claim 5
Dependent Claim
18 words
The article having a wrapping material of claim 3 wherein both of said layers comprise a polymeric film.
Claim 6
Dependent Claim
22 words
The article having a wrapping material of claim 4 wherein said tear strip is adhered to said article by an adhesive tape.
Claim 7
Dependent Claim
22 words
The article having a wrapping material of claim 1 wherein said tear strip is adhered to said article by an adhesive layer.
Claim 8
Dependent Claim
56 words
An article having a wrapping material over it, said wrapping material having a tear strip associated therewith which when pulled is capable of tearing through said wrapping, said tear strip comprising two layers secured by an adhesive containing frangible microcapsules, said microcapsules having average diameters between 3 and 180 microns and releasing a fragrance when broken.
Claim 9
Dependent Claim
56 words
An article having a wrapping material over it, said wrapping material having a tear strip associated therewith which when pulled is capable of tearing through said wrapping, said tear strip comprising two layers secured by an adhesive containing frangible microcapsules, said microcapsules having average diameters between 3 and 180 microns and releasing a fragrance when broken.
Claim 10
Dependent Claim
23 words
The article with a wrapping material over it of claim 7 wherein at least one of said two layers is a polymeric film.
Claim 11
Dependent Claim
22 words
The article having a wrapping material of claim 8 wherein said tear strip is adhered to said article by an adhesive tape.
Claim 12
Dependent Claim
20 words
The article having a wrapping material of claim 7 wherein said tear strip is further adhesively secured to said article.
Claim 13
Dependent Claim
22 words
The article having a wrapping material of claim 10 wherein said tear strip is adhered to said article by an adhesive tape.
Claim 14
Dependent Claim
17 words
The article having a wrapping material of claim 10 wherein said article is a package of cigarettes.
Claim 15
Dependent Claim
22 words
The article having a wrapping material of claim 12 wherein said tear strip is adhered to said article by an adhesive tape.
Claim 16
Dependent Claim
17 words
The article having a wrapping material of claim 7 wherein said article is a package of cigarettes.
Claim 17
Dependent Claim
22 words
The article having a wrapping material of claim 14 wherein said tear strip is adhered to said article by an adhesive tape.
Claim 18
Dependent Claim
17 words
The article having a wrapping material of claim 7 wherein said wrapping material is a transparent film.
Claim 19
Dependent Claim
22 words
The article having a wrapping material of claim 7 wherein said tear strip is adhered to said article by an adhesive tape.
Claim 20
Dependent Claim
46 words
An article comprising an interior article, an overwrap, and a tear strip for opening said overwrap having said tear strip secured by an adhesive layer to said interior article, the adhesive layer containing frangible microcapsules having average diameters of 3 to 180 microns containing fragrance therein.
Claim 21
Dependent Claim
46 words
An article comprising an interior article, an overwrap, and a tear strip for opening said overwrap having said tear strip secured by an adhesive layer to said interior article, the adhesive layer containing frangible microcapsules having average diameters of 3 to 180 microns containing fragrance therein.
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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) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |