US3976819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin-coated glass bottles
Assignee: Hayashibara Seibutsu Kagaku Kenkyujo KK
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Filing: 1975-02-25
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Granted: 1976-08-24
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Expires: 1995-02-25
Abstract
Abstract A resin-coated high pressure glass bottle prepared by forming a first layer with pullulan on the exterior surface of a high pressure glass bottle and then overcoating this first layer with a resin of high alkali resistance, e.g. an epoxy, urethane or ethyl cellulose resin.
Inventors
- 👤 Atsuo Mori
- 👤 Kozo Tsuji
- 👤 Shuji Kitamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:14
CPC Classifications
C; C08; C08L; C08L5/00; B; B65; B65D; B65D23/00; B65D23/08; B65D23/0807; B65D23/0814; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C03C17/34; C03C17/3405; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/26; Y10T428/31504; Y10T428/31511; Y10T428/31551
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
A resin-coated glass bottle which comprises a pullulan resin coating layer on the exterior surface of a bottle, and an alkali resistant resin coating layer on said pullulan resin coating layer, wherein the thickness of the pullulan resin coating layer is 100 to 1,000μ, wherein the thickness of the alkali-resistant resin coating layer is 10 to 500μ and wherein the molecular weight of the pullulan resin is 50,000 to 3,500,000.
Claim 2
Dependent Claim
70 words
A resin-coated glass bottle which comprises a pullulan resin coating layer on the exterior surface of a bottle, and an alkali resistant resin coating layer on said pullulan resin coating layer, wherein the thickness of the pullulan resin coating layer is 100 to 1,000μ, wherein the thickness of the alkali-resistant resin coating layer is 10 to 500μ and wherein the molecular weight of the pullulan resin is 50,000 to 3,500,000.
Claim 3
Dependent Claim
20 words
A resin-coated glass bottle according to claim 1, wherein the alkali-resistant resin is an epoxy, urethane or ethyl cellulose resin.
Claim 4
Dependent Claim
16 words
A resin-coated glass bottle according to claim 1, wherein the alkali-resistant resin is an urethane resin.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |