US3091553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a moisture-permeable film of plastic materials
Assignee: Sanzen Seishi KK
•
Filing: 1961-11-20
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Granted: 1963-05-28
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Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Matsumoto Tsunetaka
- 👤 Kato Norio
- 👤 Sumitani Keizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:36
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR THE PRODUCTION OF A MOISTURE-PERMEABLE FILM OF A PLASTIC MATERIAL WHICH COMPRISES: (A) UNIFORMLY AND DISCONTINUOUSLY ADHERING TO THE SURFACE OF A FILM OF PLASTIC MATERIAL FINE PARTICLES OF A SOLVENT FOR THE PLASTIC MATERIAL, THE VISCOSITY AND THE SURFACE TENSION OF THE SOLVENT BEING ADJUSTED TO EFFECT SAID UNIFORM AND DISCONTINUOUS ADHESION; AND (B) HEATING THE FILM WITH THE SOLVENT PARTICLES ADHERED THERETO, THEREBY TO EFFECT DISSOLUTION OF THE PLASTIC MATERIAL AT THE LOCI ON THE FILM WHERE SAID PARTICLES ARE ADHERED WITH RESULTANT INCREASE IN THE MOISTUREPERMEABILITY OF THE FILM.
Claim 2
Dependent Claim
95 words
A PROCESS FOR THE PRODUCTION OF A MOISTURE-PERMEABLE FILM OF A PLASTIC MATERIAL WHICH COMPRISES: (A) UNIFORMLY AND DISCONTINUOUSLY ADHERING TO THE SURFACE OF A FILM OF PLASTIC MATERIAL FINE PARTICLES OF A SOLVENT FOR THE PLASTIC MATERIAL, THE VISCOSITY AND THE SURFACE TENSION OF THE SOLVENT BEING ADJUSTED TO EFFECT SAID UNIFORM AND DISCONTINUOUS ADHESION; AND (B) HEATING THE FILM WITH THE SOLVENT PARTICLES ADHERED THERETO, THEREBY TO EFFECT DISSOLUTION OF THE PLASTIC MATERIAL AT THE LOCI ON THE FILM WHERE SAID PARTICLES ARE ADHERED WITH RESULTANT INCREASE IN THE MOISTUREPERMEABILITY OF THE FILM.
References Cited (Backward Citations)
US2806256A
Cited
US2826509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |