Patent US3166435A successfully refreshed from Google Patents.
US3166435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying process for hydrophilic films
Assignee: EIDP Inc
•
Filing: 1961-11-28
•
Granted: 1965-01-19
•
Expires: 1981-11-28
Abstract
No abstract record available.
Inventors
- 👤 John W Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:57
CPC Classifications
B; B29; B29D; B29D7/00; C; C08; C08J; C08J5/00; C08J5/18; B29C; B29C71/00; C08J2301/00; C08J2301/06; Y; Y10; Y10S; Y10S428/00; Y10S428/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE PROCESS COMPRISING DRYING A NON-FIBOUS FILM OF GEL HYDROPHILIC MATERIAL TO A MOISTURE CONTENT WITHIN THE RANGE OF 75 TO 15 PERCENT, BASED ON THE DRY WEIGHT OF THE HYDROPHILIC MATERIAL, BY CONTACTING SAID FILM WITH A HEATED SUPPORTING SURFACE, COMPLETING THE DRYING OF SAID FILM TO A MOISTURE CONTENT WITHIN THE RANGE OF 1 TO 10 PERCENT BY PASSING SAID FILM THROUGH AT LEAST ONE SPAN IN WHICH SAID FILM IS SUSPENDED OUT OF CONTACT WITH A HEATED SURFACES, COATING THE DRIED FILM WITH A LIQUID COATING COMPOSITION CONTAINING AN ORGANIC POLYMERIC MATERIAL AND A LIQUID MEDIUM WHICH SWELLS THE HYDROPHILIC FILM AND DRYING THE COATED FILM.
Claim 2
Dependent Claim
109 words
THE PROCESS COMPRISING DRYING A NON-FIBOUS FILM OF GEL HYDROPHILIC MATERIAL TO A MOISTURE CONTENT WITHIN THE RANGE OF 75 TO 15 PERCENT, BASED ON THE DRY WEIGHT OF THE HYDROPHILIC MATERIAL, BY CONTACTING SAID FILM WITH A HEATED SUPPORTING SURFACE, COMPLETING THE DRYING OF SAID FILM TO A MOISTURE CONTENT WITHIN THE RANGE OF 1 TO 10 PERCENT BY PASSING SAID FILM THROUGH AT LEAST ONE SPAN IN WHICH SAID FILM IS SUSPENDED OUT OF CONTACT WITH A HEATED SURFACES, COATING THE DRIED FILM WITH A LIQUID COATING COMPOSITION CONTAINING AN ORGANIC POLYMERIC MATERIAL AND A LIQUID MEDIUM WHICH SWELLS THE HYDROPHILIC FILM AND DRYING THE COATED FILM.
References Cited (Backward Citations)
US1978341A
Cited
US2098534A
Cited
US2201747A
Cited
US2281496A
Cited
US2321938A
Cited
US2597625A
Cited
US2593207A
Cited
US2977243A
Cited
US2971857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |