Patent US2486151A successfully refreshed from Google Patents.
Patent US4173676A successfully refreshed from Google Patents.
US4173676A
Expired / Lapsed
US
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Adhesive tape
Assignee: Toyo Kagaku Co Ltd
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Filing: 1977-11-10
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Granted: 1979-11-06
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Expires: 1997-11-10
Abstract
Abstract An adhesive tape is provided which comprises a film of high density polyethylene having a density of not less than 0.94 g/cc elongated at least six times only transversely to the longitudinal direction of the tape and a layer of pressure sensitive adhesive applied at least on one side of said elongated film of high density polyethylene. The adhesive tape has a high tensile strength against a force applied in a direction transverse to the longitudinal direction of the tape. Nevertheless, the tape can be easily torn or cut by user's hand or hands exactly transversely to the longitudinal direction of the tape without being torn zigzag or in a slanting direction.
Inventors
- 👤 Hiroshi Asakura
- 👤 Ippei Chimura
- 👤 Keisuke Kitazume
- 👤 Yoshiyuki Kaneko
- 👤 Shirou Fuse
- 👤 Akio Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:18
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/24; C09J7/241; C09J7/243; C09J2301/00; C09J2301/10; C09J2301/16; C09J2301/162; C09J2301/18; C09J2400/00; C09J2400/20; C09J2400/28; C09J2400/283; C09J2421/00; C09J2423/00; C09J2423/005; C09J2423/006; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/26; Y10T428/28; Y10T428/2848
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
An adhesive tape comprising a film of high density polyethylene having a density of not less than 0.94 g/cc elongated six to sixteen times only transversely to the longitudinal direction of the tape and a layer of pressure sensitive adhesive applied at least on one side of said elongated film of high density polyethylene, said film of high density polyethylene having a thickness of 30 to 60μ.
Claim 2
Dependent Claim
67 words
An adhesive tape comprising a film of high density polyethylene having a density of not less than 0.94 g/cc elongated six to sixteen times only transversely to the longitudinal direction of the tape and a layer of pressure sensitive adhesive applied at least on one side of said elongated film of high density polyethylene, said film of high density polyethylene having a thickness of 30 to 60μ.
Claim 3
Dependent Claim
30 words
The adhesive tape as claimed in claim 1 wherein said film of high density polyethylene is elongated at least ten times only transversely to the longitudinal direction of the tape.
Claim 4
Dependent Claim
28 words
The adhesive tape as claimed in claim 1 wherein said layer of pressure sensitive adhesive is applied to said one side of the film of high density polyethylene.
Claim 5
Dependent Claim
29 words
The adhesive tape as claimed in claim 1 wherein a second layer of pressure sensitive adhesive is applied to the other side of said film of high density polyethylene.
Claim 6
Dependent Claim
19 words
The adhesive tape as claimed in claim 1 wherein said adhesive tape is in the form of a roll.
References Cited (Backward Citations)
US3088848A
Cited
US3556894A
Cited
US3620366A
Cited
US3563782A
Cited
US3974311A
Cited
US3993826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |