US2838420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for drying impregnated porous webs
Assignee: Kimberly Clark Corp
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Filing: 1956-08-23
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Granted: 1958-06-10
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Expires: 1976-08-23
Abstract
No abstract record available.
Inventors
- 👤 John E Valente
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:57
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/101; F26B13/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
THE METHOD OF PRODUCING AN IMPREGNATED WEB IN WHICH THE IMPREGNATED IS SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT THE THICKNESS OF THE WEB WHICH COMPRISES INTRODUCING INTO A POROUS WEB A VOLATILE LIQUID VEHICLE IN SUCH QUANTITY AND CONTAINING AN IMPREGNATING IN LOW ENOUGH CONCENTRATION THAT SAID VEHICLE IS PRESENT IN SAID WEB AS A CONTINUOUS LIQUID BODY THROUGHOUT THE THICKNESS OF THE WEB AND SAID IMPREGNANT IS MOBILE WITHIN SAID WEB IN RESPONSE TO FORCES ESTABLISHED BY DRYING SAID WEB, PASSING A GASEOUS DRYING MEDIUM THROUGH SAID WEB IN ALTERNATELY OPPOSITE DIRECTION BEFORE AND UNTIL SAID CONTINUOUS LIQUID BODY IS INTERRUPTED BUT SAID WEB IS STILL WET WITH SAID VEHICLE AND CONTAINS A SUBSTANIAL QUANTITY THEREOF CAPABLE OF BEING EVAPORATED BY A CONVENTIONAL DRYING PROCESS, THEREBY TO IMMOBILIZE THE IMPREGNANT IN THE WEB, AND THEN FURTHER DRYING THE WEB SUFFICIENTLY TO PERMIT HANDLING.
Claim 2
Independent Claim
142 words
THE METHOD OF PRODUCING AN IMPREGNATED WEB IN WHICH THE IMPREGNATED IS SUBSTANTIALLY UNIFORMLY DISTRIBUTED THROUGHOUT THE THICKNESS OF THE WEB WHICH COMPRISES INTRODUCING INTO A POROUS WEB A VOLATILE LIQUID VEHICLE IN SUCH QUANTITY AND CONTAINING AN IMPREGNATING IN LOW ENOUGH CONCENTRATION THAT SAID VEHICLE IS PRESENT IN SAID WEB AS A CONTINUOUS LIQUID BODY THROUGHOUT THE THICKNESS OF THE WEB AND SAID IMPREGNANT IS MOBILE WITHIN SAID WEB IN RESPONSE TO FORCES ESTABLISHED BY DRYING SAID WEB, PASSING A GASEOUS DRYING MEDIUM THROUGH SAID WEB IN ALTERNATELY OPPOSITE DIRECTION BEFORE AND UNTIL SAID CONTINUOUS LIQUID BODY IS INTERRUPTED BUT SAID WEB IS STILL WET WITH SAID VEHICLE AND CONTAINS A SUBSTANIAL QUANTITY THEREOF CAPABLE OF BEING EVAPORATED BY A CONVENTIONAL DRYING PROCESS, THEREBY TO IMMOBILIZE THE IMPREGNANT IN THE WEB, AND THEN FURTHER DRYING THE WEB SUFFICIENTLY TO PERMIT HANDLING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |