Patent US4190550A successfully refreshed from Google Patents.
US4190550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soap-filled pad
Assignee: 3M Co
•
Filing: 1977-12-14
•
Granted: 1980-02-26
•
Expires: 1997-12-14
Abstract
Abstract A seamless, fibrous, soap-filled pad which, when used as a bathing aid, imparts a cleansing and mildly stimulating rubbing action to human skin. A seamless envelope of crimped, resilient, stretchy synthetic organic fibers surrounds a core of solid soap or other suitable surfactant material and is held in integral form solely by the inter-entanglement of the fibers.
Inventors
- 👤 Douglas D. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:34
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/04; C11D17/049; A; A47; A47K; A47K7/00; A47K7/02; A47K7/03; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2933; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/682; Y10T442/684; Y10T442/688
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
A seamless, fibrous soap-filled pad, having particular utility in imparting a cleansing and mildly stimulating rubbing action to human skin, comprising in combination: a seamless edgeless continuous envelope of needled crimped, resilient, stretchy synthetic organic fibers which are at least about 3 cm long and have about 2 to about 10 crimps per cm, said envelope surrounding a core of solid, surfactant material, the thickness of the envelope wall lying outward from said core being at least about 5 mm, and being held in integral form solely by the needled inter-entanglement of said fibers. said pad being of a size capable of being readily held in the palm of the user.
Claim 2
Dependent Claim
111 words
A seamless, fibrous soap-filled pad, having particular utility in imparting a cleansing and mildly stimulating rubbing action to human skin, comprising in combination: a seamless edgeless continuous envelope of needled crimped, resilient, stretchy synthetic organic fibers which are at least about 3 cm long and have about 2 to about 10 crimps per cm, said envelope surrounding a core of solid, surfactant material, the thickness of the envelope wall lying outward from said core being at least about 5 mm, and being held in integral form solely by the needled inter-entanglement of said fibers. said pad being of a size capable of being readily held in the palm of the user.
Claim 3
Dependent Claim
20 words
The pad of claim 1 wherein said fibers are on the order of 20 to 200 microns in average diameter.
Claim 4
Dependent Claim
19 words
The pad of claim 1 wherein said fibers are selected from the group consisting of nylon, polyester and polypropylene.
Claim 5
Dependent Claim
24 words
The pad of claim 1 wherein the weight ratio of said core to said envelope is in a range of about 1:1 to 20:1.
Claim 6
Dependent Claim
10 words
The pad of claim 1 wherein said core is conformable.
Claim 7
Dependent Claim
11 words
The pad of claim 1 wherein said core contains a medicament.
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) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |