US4013610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sparingly gas-permeable synthetic resin compositions
Assignee: Takeda Pharmaceutical Co Ltd
•
Filing: 1975-06-19
•
Granted: 1977-03-22
•
Expires: 1995-06-19
Abstract
Abstract Synthetic resin compositions prepared by blending resin with the surface-treated glass flakes obtained by treating glass flakes with an inorganic acid have an excellent resistance against gas-permeability.
Inventors
- 👤 Akira Tomohiro
- 👤 Kenzo Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:01
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; C08K9/06; C08K9/02; Y; Y10; Y10S; Y10S260/00; Y10S260/41
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
44 words
A sparingly gas-permeable synthetic resin composition impregnated with surface-treated glass flakes obtained by contacting glass flakes with an inorganic acid solution at a pH not higher than 1.0 at a temperature of 50° C up to the boiling point of the inorganic acid solution.
Claim 2
Dependent Claim
44 words
A sparingly gas-permeable synthetic resin composition impregnated with surface-treated glass flakes obtained by contacting glass flakes with an inorganic acid solution at a pH not higher than 1.0 at a temperature of 50° C up to the boiling point of the inorganic acid solution.
Claim 3
Dependent Claim
40 words
A sparingly gas-permeable synthetic resin composition as claimed in claim 1, wherein an amount of glass flakes impregnated in the resin composition ranges from about 0.5 to about 70 weight % relative to the whole amount of the resin composition.
Claim 4
Dependent Claim
40 words
A sparingly gas-permeable synthetic resin composition as claimed in claim 1, wherein the surface-treated glass flakes are one obtained by coating the glass flakes with a silane coupling agent after the treatment of the glass flakes with an inorganic acid.
Claim 5
Dependent Claim
41 words
A sparingly gas-permeable synthetic resin composition as claimed in claim 3, wherein an amount of glass flakes impregnated in the resin composition ranges from about 0.5 to about 70 weight % relative to the whole amount of the synthetic resin composition.
Claim 6
Dependent Claim
21 words
A sparingly gas-permeable synthetic resin composition as claimed in claim 1 wherein the temperature of treatment is at least 90° C.
References Cited (Backward Citations)
US3499955A
Cited
US3701750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |