US3815602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable diaper
Assignee: EIDP Inc
•
Filing: 1969-12-31
•
Granted: 1974-06-11
•
Expires: 1989-12-31
Abstract
Abstract Improvements in disposable diapers of the type having moistureabsorbing cellulosic material sandwiched between a waterproof backing sheet and a cover fabric worn next to the body. The cover fabric is a light-weight apertured nonwoven of unbonded polyester fibers hydraulically entangled into a strong fabric having durability in use, rapid transmission of fluid to the absorbing layer without wicking, and a dry feeling when the absorbing layer is wet.
Inventors
- 👤 M Johns
- 👤 J Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:50
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/45; A61F13/49; A61F13/494; A61F13/49406; A61F13/49413; A61F13/49001; A61F13/51; A61F13/511; A61F13/51121; A61F13/512; A61F13/513
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
23 words
A diaper as defined in claim 1 wherein said polyester fibers are about 1.5 denier and about 0.75 to 3 inches in length.
References Cited (Backward Citations)
US3081515A
Cited
US2862251A
Cited
US3180335A
Cited
US3426756A
Cited
US3523536A
Cited
US3402715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |