US5501897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracking resistant pressure-sensitive adhesive tape
Assignee: Nitto Denko Corp
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Filing: 1994-10-31
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Granted: 1996-03-26
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Expires: 2014-10-31
Abstract
Abstract A tracking resistant pressure-sensitive adhesive tape comprising an electrically insulating film having a comparative tracking index by an tracking resistant test of the IEC method of at least 400 V, a modulus of elasticity of from 20 to 1,200 kg/mm 2 , and a thickness of from 5 to 150 μm, and having formed on one side thereof a pressure-sensitive adhesive layer.
Inventors
- 👤 Hiroki Ichikawa
- 👤 Kaoru Aizawa
- 👤 Toshimitsu Okuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:19
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/323; C; C09; C09J; C09J7/00; C09J7/20; C09J7/29; C09J2400/00; C09J2400/20; C09J2400/26; C09J2400/263; C09J2400/28; C09J2400/283; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2848; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2713; Y10T442/2738; Y10T442/2754
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A tracking resistant pressure-sensitive adhesive tape comprising an electrically insulating film wherein said electrically insulating film is a composite film of a surface layer and a support film, wherein said surface layer comprises a polyolefin series resin, butyl rubber, or polymethyl methacrylate, and wherein said electrically insulating film has a comparative tracking index by an tracking resistant test of the IEC method of at least 400 V, a modulus of elasticity of from 20 to 1,200 kg/mm 2 , and a thickness of from 5 to 150 μm, and having formed on one side thereof a pressure-sensitive adhesive layer.
Claim 2
Dependent Claim
99 words
A tracking resistant pressure-sensitive adhesive tape comprising an electrically insulating film wherein said electrically insulating film is a composite film of a surface layer and a support film, wherein said surface layer comprises a polyolefin series resin, butyl rubber, or polymethyl methacrylate, and wherein said electrically insulating film has a comparative tracking index by an tracking resistant test of the IEC method of at least 400 V, a modulus of elasticity of from 20 to 1,200 kg/mm 2 , and a thickness of from 5 to 150 μm, and having formed on one side thereof a pressure-sensitive adhesive layer.
Claim 3
Dependent Claim
46 words
The tracking resistant pressure-sensitive adhesive tape of claim 1, wherein the support film is a film having a thickness of about 150 μm comprising polyester, polyethylene naphthalate, polyphenylene sulfide, polyether ether ketone, polyimide, a tissue paper, an epoxy resin-impregnated polyester nonwoven cloth, or a glass cloth.
Claim 4
Dependent Claim
19 words
The tracking resistant pressure-sensitive adhesive tape of claim 1, wherein said pressure-sensitive adhesive layer contains a flame retardent agent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-26 | 1999-09-25 | 2000-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-26 | 2003-09-25 | 2004-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-26 | 2007-09-25 | 2008-03-26 | $7700.00 | Window Closed / Lapsed |