US3825007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pledgets
Assignee: Individual
•
Filing: 1972-01-07
•
Granted: 1974-07-23
•
Expires: 1992-01-07
Abstract
Abstract A ''''pledget'''' is disclosed which comprises a piece of an absorbent, fiberous material having a surface covered by a covering of a flexible, resilient polymer material which extends over and around and into the interstices of the fibers at the surface of the piece of material. Such a structure can be created by contacting the surface with a layer of a latex of the polymer material for a sufficient period so that the liquid vehicle within the latex will be absorbed into the fiberous material, resulting in the formation of the covering on the fibers at the surface of the material, and then removing the liquid vehicle from the material and from the covering.
Inventors
- 👤 R Rand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:28
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/01; A61F13/01008; A61F13/15; A61F13/20; A61F13/2051; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/31504; Y10T428/31826; Y10T428/31841; Y10T428/31971; Y10T442/00; Y10T442/50; Y10T442/51
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
40 words
A pledget as claimed in claim 1 wherein: said absorbent, fiberous material is cotton felt, said polymer material is natural rubber and said covering is porous so as to permit the absorption of fluids by said piece through said covering.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |