Patent US4457460A successfully refreshed from Google Patents.
US4457460A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wristwatch strap with protective layer that contacts the wrist
Assignee: Hermann Hirsch Leder und Kunststoffwarenfabrik
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Filing: 1983-01-28
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Granted: 1984-07-03
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Expires: 2003-01-28
Abstract
Abstract A wristwatch strap of leather or the like has a continuous non-porous barrier layer on the surfaces of the strap that contact the wrist of the wearer. The barrier layer consists of metal particles such as aluminum, noble metal or silver, having a particle size of 150 to 500 microns, preferably 200 to 350 microns, embedded in a matrix which consists of a synthetic resin. The barrier layer is effective to prevent the transfer of allergens and irritants from the material of the wristwatch strap, to the skin of the wearer.
Inventors
- 👤 Hermann Hirsch
- 👤 Reinhart Jarisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:53
CPC Classifications
A; A41; A41D; A41D31/00; A44; A44C; A44C27/00; A44C27/001; A44C27/005; A44C27/006; A61; A61F; A61F13/00; A61F13/10; A61F13/15; A61F13/84; A61F13/8405; A61F2013/00089; A61F2013/00217; A61F2013/00361; A61F2013/00902; A61F2013/00936; A61F2013/15008; A61F2013/15048; A61F13/51; A61F13/511; A61F2013/51186; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/25; Y10T428/256; Y10T428/26; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31685; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T428/4935; Y10T428/8305
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
46 words
A flexible wristwatch strap of leather or the like, having a continuous nonporous barrier layer on the surfaces of the wristwatch strap that contact the wrist of the wearer, said barrier layer consisting of metal particles embedded in a matrix which consists of a synthetic resin.
Claim 2
Dependent Claim
46 words
A flexible wristwatch strap of leather or the like, having a continuous nonporous barrier layer on the surfaces of the wristwatch strap that contact the wrist of the wearer, said barrier layer consisting of metal particles embedded in a matrix which consists of a synthetic resin.
Claim 3
Dependent Claim
15 words
A flexible wristwatch strap as claimed in claim 1, wherein said metal particles are aluminum.
Claim 4
Dependent Claim
17 words
A flexible wristwatch strap as claimed in claim 1, wherein said metal particles are a noble metal.
Claim 5
Dependent Claim
15 words
A flexible wristwatch strap as claimed in claim 1, wherein said metal particles are silver.
Claim 6
Dependent Claim
22 words
A flexible wristwatch strap as claimed in claim 1, wherein said metal particles have a particle size of 150 to 500 microns.
Claim 7
Dependent Claim
22 words
A flexible wristwatch strap as claimed in claim 1, wherein said metal particles have a particle size of 200 to 350 microns.
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) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |