US3255496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of producing perforated nonwoven fabric
Assignee: Johnson and Johnson
•
Filing: 1963-11-01
•
Granted: 1966-06-14
•
Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Kalwaites Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/70; D04H1/74; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CONTINUOUS METHOD OF CONVERTING A LAYER OF DRY FIBERS INTO A NONWOVEN FABRIC HAVING HOLES THEREIN ARRANGED IN A PREDETERMINED PATTERN WHICH COMPRISES: EMBEDDING SAID LAYER OF DRY FIBERS ON A GROUP OF PRONGS ARRANGED IN A PREDETERMINED PATTERN TO FORM HOLES HAVING SURROUNDING RAISED LIPS IN SAID LAYER OF DRY FIBERS; WETTING SAID LAYER OF FIBERS WITH AN AQUEOUS MEDIUM WHILE EMBEDDED AT THE BASE OF SAID GROUP OF PRONGS; BRUSHING SAID LAYER OF WET FIBERS IN THE AREA BETWEEN SAID PRONGS TO FORM CHANNELS BETWEEN SAID LIPS AND LONGITUDINALLY OF SAID LAYER; AND REMOVING THE BRUSHED LAYER OF WET FIBERS FROM SAID GROUP OF PRONGS.
Claim 2
Dependent Claim
108 words
A CONTINUOUS METHOD OF CONVERTING A LAYER OF DRY FIBERS INTO A NONWOVEN FABRIC HAVING HOLES THEREIN ARRANGED IN A PREDETERMINED PATTERN WHICH COMPRISES: EMBEDDING SAID LAYER OF DRY FIBERS ON A GROUP OF PRONGS ARRANGED IN A PREDETERMINED PATTERN TO FORM HOLES HAVING SURROUNDING RAISED LIPS IN SAID LAYER OF DRY FIBERS; WETTING SAID LAYER OF FIBERS WITH AN AQUEOUS MEDIUM WHILE EMBEDDED AT THE BASE OF SAID GROUP OF PRONGS; BRUSHING SAID LAYER OF WET FIBERS IN THE AREA BETWEEN SAID PRONGS TO FORM CHANNELS BETWEEN SAID LIPS AND LONGITUDINALLY OF SAID LAYER; AND REMOVING THE BRUSHED LAYER OF WET FIBERS FROM SAID GROUP OF PRONGS.
References Cited (Backward Citations)
US1854481A
Cited
US1978620A
Cited
US2647065A
Cited
US3081512A
Cited
US3081515A
Cited
US3104998A
Cited
US2862251A
Cited
US3040412A
Cited
US3081501A
Cited
US3025585A
Cited
US3101520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |