US3391823A
Expired / Lapsed
US
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Rigidified polyethene structures and method of producing them
Assignee: Vasco Ind Corp
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Filing: 1965-03-02
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Granted: 1968-07-09
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Expires: 1985-03-02
Abstract
No abstract record available.
Inventors
- 👤 Hendrik Tijms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:29
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C41/00; B29C41/02; B29C41/04; B29C41/042; B29C41/08; B29C41/085; B29C41/22; B29C44/04; B29C44/0461; B32; B32B; B32B27/00; B65; B65D; B65D65/00; B65D65/38; C; C08; C08J; C08J9/00; C08J9/24; F; F01; F01B; F01B3/00; F01B3/0082; F01B3/0085; F01B3/0088; B29C41/06; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2067/00; B29K2067/06; B29K2105/00; B29K2105/04; B29K2105/06; B29K2105/12; B29L; B29L2031/00; B29L2031/712; B29L2031/769; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1376; Y10T428/24; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/249988; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
42 words
A SELF-SUPPORTING CONTAINER HIGHLY RESISTANT TO CHEMICALS, THE BODY-FORMING WALL OF WHICH CONSISTS ESSENTIALLY OF A FOAMED LAYER OF POLYETHENE HAVING GENERALLY THE CONFIGURATION OF SUCH CONTAINER, AND HAVING A RELATIVELY DENSE LAYER OF POLYETHENE COVERING AND IN DIRECT ADHESION TO ITS
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |