US4673586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making plastic containers having decreased gas permeability
Assignee: Cosden Technology Inc
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Filing: 1985-10-29
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Granted: 1987-06-16
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Expires: 2005-10-29
Abstract
Abstract The apparatus for making plastic containers having decreased gas permeability includes a chamber, an ionizing source located in the chamber for ionizing a material to be deposited on the containers, and a screen located between the ionizing source and the containers for preventing damage to the containers by heat generated by the ionizing source. The method includes the step of locating a screen between the ionization source and the container whereby heat generated by the ionization source will not damage the container.
Inventors
- 👤 Gerald W. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:35
CPC Classifications
B; B29; B29C; B29C71/00; B29C71/04; C; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/32; B29L; B29L2031/00; B29L2031/712
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
66 words
A method of making plastic containers having decreased gas permeability comprising the steps of: ionizing a material to be deposited on the plastic container: locating a magnetic field in said container whereby the residency of said thermionic electrons about said containers is prolonged; and, positioning a screen between the containers and the material being ionized for preventing damage to said containers by heat generated by ionization.
Claim 2
Independent Claim
66 words
A method of making plastic containers having decreased gas permeability comprising the steps of: ionizing a material to be deposited on the plastic container: locating a magnetic field in said container whereby the residency of said thermionic electrons about said containers is prolonged; and, positioning a screen between the containers and the material being ionized for preventing damage to said containers by heat generated by ionization.
Claim 3
Dependent Claim
37 words
The method of claim 1 and including the steps of: locating the ionization means, containers, and screen in a chamber; and, connecting a vacuum pump to said chamber and reducing the pressure in said chamber to sub-atmospheric.
Claim 4
Dependent Claim
27 words
The method of claim 1 and further including the step of rotating the containers to aid in obtaining an even distribution of ionized material on said containers.
Claim 5
Dependent Claim
18 words
The method of claim 1 including the step of imposing a positive direct current bias on said screen.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |