US3680561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber fleece for medical or hygienical purposes
Assignee: Individual
•
Filing: 1970-09-08
•
Granted: 1972-08-01
•
Expires: 1990-09-08
Abstract
Abstract There is disclosed a fiber fleece for medical or hygienical purpose, which is characterized by the fact that it is composed of fibers and overtwisted filaments and its binder content is so low that the overtwisted filaments change their twisting when being wetted by water.
Inventors
- 👤 Heinz Baron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:52
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/01; A61F13/01021; A61F2013/00089; A61F2013/00238; A61F2013/00361; A61F2013/00727; A61F2013/00731; A61F2013/00744; A61F13/15; A61F13/53; A61F2013/530131; A61F2013/530182
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
35 words
A non-woven fiber fleece for medical or hygienical purposes comprising fibers and overtwisted filaments and having a so low bonder content that the overtwisted filaments change their twisting upon being wetted by fluid, e.g., water.
Claim 2
Dependent Claim
35 words
A non-woven fiber fleece for medical or hygienical purposes comprising fibers and overtwisted filaments and having a so low bonder content that the overtwisted filaments change their twisting upon being wetted by fluid, e.g., water.
Claim 3
Dependent Claim
19 words
A fiber fleece as defined in claim 1, its fiber content comprising 10 to 30 per cent overtwisted filaments
Claim 4
Dependent Claim
21 words
A fiber fleece as defined in claim 1, the twisting of said overtwisted filaments being at least 1000 turns per meter.
Claim 5
Dependent Claim
19 words
A fiber fleece as defined in claim 1, the length of said overtwisted filaments being several centimeters to decimeters.
Claim 6
Dependent Claim
19 words
A fiber fleece as defined in claim 1, said filaments extending over the entire width of said fiber fleece.
Claim 7
Dependent Claim
29 words
A fiber fleece as defined in claim 1, wherein overtwisted filaments are disposed transverse of the general direction of said fibers and are stitched together with said fiber fleece.
Claim 8
Dependent Claim
19 words
A fiber fleece as defined in claim 1, wherein overtwisted filaments are connected into a net with non-overtwisted filaments.
Claim 9
Dependent Claim
16 words
A fiber fleece as defined in claim 1, wherein overtwisted filaments are connected to a net.
Claim 10
Dependent Claim
10 words
A fiber fleece as defined in claim 1, dyed violet.
References Cited (Backward Citations)
US2404837A
Cited
US2823444A
Cited
US2945738A
Cited
US3190289A
Cited
US3316906A
Cited
US3320956A
Cited
US3371668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |