US4955360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-generating material for portable hair curler
Assignee: FINETEC Co Ltd A CORP OF JAPAN
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Filing: 1989-02-28
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Granted: 1990-09-11
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Expires: 2009-02-28
Abstract
Abstract A metallic heat-generating agent comprising as a main component iron powder and water generating steam by an oxidation reaction caused by contact with air is contained in an air-permeable bag as a heat-generating material for a portable hair curler. A portable hair curler is constructed and operated by exchangeably inserting this metallic heat-generating material in a hair-winding guide cylinder and dismountably attaching a cover after winding the hair onto the hair-winding guide cylinder.
Inventors
- 👤 Yoshihiro Ogawa
- 👤 Hiroo Takahashi
- 👤 Yoshinori Kikuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:01
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A45; A45D; A45D2/00; A45D2/36; A45D2/365; A61K; A61K8/00; A61K8/02; C; C09; C09K; C09K5/00; C09K5/16; A61K2800/00; A61K2800/20; A61K2800/24; A61K2800/242
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
A heat generator for a portable hair curler, which comprises (1) a heat-generating agent comprising 62.7±3.0% of an iron powder, 0.6±0.2% of NaOH, 21.5±4.0% of zeolite, 1.8±1.2% of an active carbon, 3.1±2.0% of NaC1, and 10.3±3.0% of water, the total amount being 100.0%, and (2) a bag for containing said heat-generating agent, which bag has vent pores for diffusing steam generated from the heat-generating agent to the outside to bring the hair into contact with said steam, and which bag has an air permeability of 60 to 1000 seconds as determined according to JIS P-8117.
Claim 2
Dependent Claim
95 words
A heat generator for a portable hair curler, which comprises (1) a heat-generating agent comprising 62.7±3.0% of an iron powder, 0.6±0.2% of NaOH, 21.5±4.0% of zeolite, 1.8±1.2% of an active carbon, 3.1±2.0% of NaC1, and 10.3±3.0% of water, the total amount being 100.0%, and (2) a bag for containing said heat-generating agent, which bag has vent pores for diffusing steam generated from the heat-generating agent to the outside to bring the hair into contact with said steam, and which bag has an air permeability of 60 to 1000 seconds as determined according to JIS P-8117.
Claim 3
Dependent Claim
16 words
A heat generator as set forth in claim 1, which is contained in an air-impermeable vessel.
Claim 4
Dependent Claim
24 words
A heat generator as set forth in claim 2, wherein a hair-winding member and a hair-pressing member are further contained in the air-impermeable vessel.
References Cited (Backward Citations)
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JPS6094101A
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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) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |