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US4843739A Expired / Lapsed US ⏱️ 0.0 years remaining

Inner shoe material with adsorbent properties

Assignee: Individual
•
Filing: 1988-05-13
•
Granted: 1989-07-04
•
Expires: 2008-05-13
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Abstract

Abstract The present invention involves an inner shoe material with adsorbent properties, whereby activated carbon particles are fixed as the adsorbent material by means of an adhesive substance in a punctiform manner to the side of the material facing away from the foot. The inner shoe material of the invention can be designed as inside lining, insoles, slipsoles, as inner sole of the shoe or as a covering material for the inner sole of the shoe. The inner shoe material of the invention can e.g. be used for combat boots with integrated C-protection or for safety boots with protection against aggressive chemicals. The inner shoe material has the advantage that it exhibits a high degree of scuff resistance on the one hand and the adsorbent activated carbon is freely accessible to the substances to be adsorbed, on the other.

Inventors

  • 👤 Hubert von Blucher
  • 👤 Hasso von Blucher
  • 👤 Ernest de Ruiter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 21:01
CPC Classifications
A; A43; A43B; A43B7/00; A43B17/00; A43B17/10; A43B17/102; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/2481

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 47 words
In an inner shoe material with activated carbon to provide adsorbent properties, the improvement wherein the activated carbon is present in the form of particles fixed by means of an adhesive substance in a punctiform manner to the side of the material facing away from the foot.
Claim 2
Dependent Claim 47 words
In an inner shoe material with activated carbon to provide adsorbent properties, the improvement wherein the activated carbon is present in the form of particles fixed by means of an adhesive substance in a punctiform manner to the side of the material facing away from the foot.
Claim 3
Dependent Claim 18 words
An inner shoe material according to claim 1, wherein the activated carbon particles are spherical or nearly spherical.
Claim 4
Dependent Claim 21 words
An inner shoe material according to claim 2, wherein the activated carbon particles have a diameter between 0.1 and 1 mm.
Claim 5
Dependent Claim 23 words
An inner shoe material according to claim 1, wherein the adhesive substance is present thereon only partially and not as a continuous surface.
Claim 6
Dependent Claim 15 words
An inner shoe material according to claim 1, wherein the adhesive substance is a latex.
Claim 7
Dependent Claim 16 words
An inner shoe material according to claim 1, wherein the adhesive substance is a thermoplastic adhesive.
Claim 8
Dependent Claim 18 words
An inner shoe material according to claim 1, in the form of an inner lining of the shoe.
Claim 9
Dependent Claim 15 words
An inner shoe material according to claim 1, in the form of a shoe insole.
Claim 10
Dependent Claim 17 words
An inner shoe material according to claim 1, in the form of a slipsole for a shoe.
Claim 11
Dependent Claim 26 words
An inner shoe material according to claim 1, in the form of an inner sole or as covering material for the inner sole of a shoe.
Claim 12
Dependent Claim 35 words
A combat boot with integrated C-protection including for at least one of the inside lining, the shoe insole, the slipsole and the inner sole of the shoe, an inner shoe material according to claim 1.
Claim 13
Dependent Claim 37 words
A safety boot with protection against aggresive chemicals including for at least one of the inside lining, the shoe insole, the slipsole and the inner sole of the shoe, an inner shoe material according to claim 1.

References Cited (Backward Citations)

US3852897A Cited
US3842519A Cited
US4099342A Cited
US4062131A Cited
US4517308A Cited
US4510193A Cited
US4510193B1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1992-07-03 1993-01-02 1993-07-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1996-07-03 1997-01-02 1997-07-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2000-07-03 2001-01-02 2001-07-04 $7700.00 Window Closed / Lapsed

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