US2990875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for forming tubes of thermoplastic film
Assignee: Millennium Petrochemicals Inc
•
Filing: 1958-06-16
•
Granted: 1961-07-04
•
Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Howard J Samuels
- 👤 Gordon P Hungerford
- 👤 Werner T Mcyer
- 👤 Tilton Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:02
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/74; B29C65/743; B29C65/7433; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/222; B29C65/223; B29C65/7439; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/137; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/4322; B29C66/70; B29C66/71; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/818; B29C66/83; B29C66/836; B29C66/84; B29C66/843; B29C66/8432; B31; B31B; B31B70/00; B31B2155/00; B31B2155/003; B31B2160/00; B31B2160/10; B31B2160/106; B31B70/14; B31B70/16; B31B70/18; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/1084; Y10T156/1087; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2735797A
Cited
US2185647A
Cited
US2289618A
Cited
US2326931A
Cited
US2469972A
Cited
US2805973A
Cited
US2796913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |