Patent US3576649A successfully refreshed from Google Patents.
US3576649A
Expired / Lapsed
US
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Plastic package for electrically non-conductive material
Assignee: BRH Corp
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Filing: 1969-02-25
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Granted: 1971-04-27
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Expires: 1989-02-25
Abstract
Abstract A PACKAGE FOR ELECTRICALLY NON-CONDUCTIVE PULVERULENT MATERIAL. THE PACKAGE HAS AN INNER LAYER OF HEAT SEALABLE ETHYLENE POLYMER TO WHICH IS ADDED A FATTY ACID AMIDE IN A QUANTITY SUCH THAT THE PULVERULENT MATERIAL BEING PACKAGED WILL NOT BE ATTRACTED TO FILM AREAS THAT ARE TO BE HEAT SEALED TO FORM A COMPLETED PACKAGE, SUCH AS MAY OCCUR IF A CHARGE OF STATIC ELECTRICITY IS GENERATED WHEN FILM FROM WHICH THE PACKAGE IS MADE PASSES THROUGH A PACKAGING MACHINE OF THE FORM-AND-FILL TYPE.
Inventors
- 👤 Irvin L Brazier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:37
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/26; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31931
Claims Analysis
Total Claims: 0
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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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |