Patent US3889031A successfully refreshed from Google Patents.
US3889031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated glass bottles
Assignee: Takeda Pharmaceutical Co Ltd
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Filing: 1972-10-26
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Granted: 1975-06-10
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Expires: 1992-10-26
Abstract
Abstract Glass bottles having their surface initially coated with an olefine copolymer containing OH groups or OH and COOH groups and then coated with a polyisocyanate or mixture of a polyisocyanate and a polyol or thermoplastic polyurethane, such coated bottles exhibiting resistance to breakage.
Inventors
- 👤 Testujiro Tatsumi
- 👤 Reiji Miyamoto
- 👤 Yutaka Matsui
- 👤 Seiji Kazama
- 👤 Tadao Takemura
- 👤 Hikoyoshi Kanayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:17
CPC Classifications
B; B65; B65D; B65D23/00; B65D23/08; B65D23/0807; B65D23/0814; C; C03; C03C; C03C17/00; C03C17/28; C03C17/32; C03C17/322; C03C17/34; C03C17/3405; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/62; C08G18/6204; C08G18/6212; Y; Y10; Y10S; Y10S215/00; Y10S215/06; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31587; Y10T428/31645; Y10T428/31649
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
20 words
A GLASS BOTTLE, THE SURFACE OF WHICH HAS BEEN INITIALLY COATED WITH AN OLEFINE COPOLYMER CONTAINING REPEATING UNITS OF (A)
Claim 2
Dependent Claim
20 words
A GLASS BOTTLE, THE SURFACE OF WHICH HAS BEEN INITIALLY COATED WITH AN OLEFINE COPOLYMER CONTAINING REPEATING UNITS OF (A)
Claim 3
Dependent Claim
44 words
A glass bottle as claimed in claim 1, wherein the olefine copolymer is a hydrolyzed product of a copolymer of an Alpha -olefine having 2 to 4 carbon atoms with vinyl acetate, the degree of hydrolysis being about 5 to about 100 mole percent.
Claim 4
Dependent Claim
23 words
A glass bottle as claimed in claim 1, wherein the polyisocyanate is an organic polyisocyanate containing 2 to 8 NCO groups per molecule.
Claim 5
Dependent Claim
69 words
A glass bottle as claimed in claim 1, wherein the polyisocyanate is tolylene diisocYanate, omega , omega ''-diisocyanate dimethylbenzene, dicyclohexylmethane diisocyanate, or Chi , Chi ''-diisocyanate dimethyl cyclohexane, or a polyurethane polyisocyanate which is prepared by reacting an excess amount one of the said diisocyanates with a low molecular polyol containing 2 to 8 OH groups per molecule and having a molecular weight of about 60 to about 2,000.
Claim 6
Dependent Claim
36 words
A glass bottle as claimed in claim 1, wherein the polyol is a low molecular polyol which contains 2 to 8 OH groups per molecule and has a molecular weight of about 60 to about 2,000.
Claim 7
Dependent Claim
54 words
A glass bottle as claimed in claim 1, wherein the thermoplastic polyurethane has a molecular weight of about 3,000 to about 20,000, and is prepared by reacting an organic diisocyanate, with a low molecular diol having a molecular weight of about 60 to about 2,000 at a molar ratio of NCO/OH of about 1/1.
Claim 8
Dependent Claim
36 words
A glass bottle as claimed in claim 1, wherein the initial coating has a thickness of about 50 to about 500 microns, and the subsequent coating has a thickness of about 2 to about 50 microns.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |