Patent US3381688A successfully refreshed from Google Patents.
US3381688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbent pads with silica gel layer for use as surgical receptacles
Assignee: Kendall Co
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Filing: 1963-08-12
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Granted: 1968-05-07
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Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Satas Donatas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:14
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/53; A61F13/534; A61F13/537; A61F13/53743; A61F13/53752; A61F13/5376; A61L; A61L15/00; A61L15/16; A61L15/18; A61F13/51; A61F13/511; A61F13/53708; A61F2013/53721; A61F13/84; A61F2013/8488; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
AN ABSORBENT ARTICLE COMPRISING A MASS OF FLUID ABSORBENT MATERIAL AND A FLUID DIRECTIONAL CONTROL ZONE HAVING A SURFACE THEREOF CONTIGUOUS WITH ABSORBENT MATERIAL OF SAID MASS, SAID SURFACE OF THE CONTROL ZONE COMPRISING A MATERIAL CARRYING FINELY DIVIDED PARTICLES OF A SIZE FROM ABOUT 5 MILLIMICRONS TO 1 MICRON HAVING A SURFACE AREA OF FROM 100 TO 500 SQUARE METERS PER GRAM OF SAID PARTICLES AND WETTABLE BY FLUID TO BE ABSORBED BY SAID ABSORBENT MATERIAL, SAID PARTICLES BEING SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT THE SURFACE AREA OF SAID ZONE IN AN AMOUNT TO PROVIDE A RATE OF CAPILLARY FLOW OF FLUID ALONG THE SURFACE OF SAID ZONE GREATER THAN THE RATE OF CAPILLARY FLOW OF FLUID IN THE MASS OF SAID ABSORBENT MATERIAL.
Claim 2
Dependent Claim
124 words
AN ABSORBENT ARTICLE COMPRISING A MASS OF FLUID ABSORBENT MATERIAL AND A FLUID DIRECTIONAL CONTROL ZONE HAVING A SURFACE THEREOF CONTIGUOUS WITH ABSORBENT MATERIAL OF SAID MASS, SAID SURFACE OF THE CONTROL ZONE COMPRISING A MATERIAL CARRYING FINELY DIVIDED PARTICLES OF A SIZE FROM ABOUT 5 MILLIMICRONS TO 1 MICRON HAVING A SURFACE AREA OF FROM 100 TO 500 SQUARE METERS PER GRAM OF SAID PARTICLES AND WETTABLE BY FLUID TO BE ABSORBED BY SAID ABSORBENT MATERIAL, SAID PARTICLES BEING SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT THE SURFACE AREA OF SAID ZONE IN AN AMOUNT TO PROVIDE A RATE OF CAPILLARY FLOW OF FLUID ALONG THE SURFACE OF SAID ZONE GREATER THAN THE RATE OF CAPILLARY FLOW OF FLUID IN THE MASS OF SAID ABSORBENT MATERIAL.
References Cited (Backward Citations)
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Cited
US2690415A
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US2923298A
Cited
US2992644A
Cited
US3081154A
Cited
US3146076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |