Patent US3308225A successfully refreshed from Google Patents.
US3308225A
Expired / Lapsed
US
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Method of forming mechanically interlocked heat seal engagement between a bottom plate and a plastic container in a coffee percolator, or other receptacle
Assignee: Individual
•
Filing: 1963-10-16
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Granted: 1967-03-07
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Expires: 1983-10-16
Abstract
No abstract record available.
Inventors
- 👤 Robert M Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:14
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/56; B29C65/60; B29C65/606; A; A47; A47J; A47J31/00; A47J31/04; A47J31/053; B29C37/00; B29C37/0078; B29C37/0082; B29C65/02; B29C65/10; B29C65/44; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/303; B29C66/3032; B29C66/30321; B29C66/50; B29C66/51; B29C66/54; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/74; B29C66/742; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81431; B29C66/83; B29C66/832; B29C66/8322; B29C66/02; B29C66/024; B29C66/0242; B29C66/731; B29C66/7316; B29C66/73161
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THAT METHOD OF MAKING A COFFEE PERCOLATOR, OR OTHER LIQUID RECEIVING ARTICLE, COMPRISING FORMING A CONTAINER FROM HEAT RESISTANT THERMOPLASTIC MATERIAL HAVING A MELTING POINT APPRECIABLY OVER 212*F., WHICH CONTAINER HAS AN OPENING IN THE BOTTOM THEREOF, PROVIDING A LOW HEAT CONDUCTIVITY METAL BOTTOM PLATE FOR THE CONTAINER, WHICH PLATE HAS A PLURALITY OF APERTURES THEREIN ADJACENT ITS PERIPHERY, HEATING SAID BOTTOM PLATE TO A TIMPERATURE APPRECIABLY ABOVE THE MELTING POINT OF THE PLASTIC FORMING SAID CONTAINER, HEATING ONE SURFACE OF SAID CONTAINER ADJACENT SAID OPENING AND COOLING THE OPPOSITE SURFACE OF SAID CONTAINER,
Claim 2
Dependent Claim
94 words
THAT METHOD OF MAKING A COFFEE PERCOLATOR, OR OTHER LIQUID RECEIVING ARTICLE, COMPRISING FORMING A CONTAINER FROM HEAT RESISTANT THERMOPLASTIC MATERIAL HAVING A MELTING POINT APPRECIABLY OVER 212*F., WHICH CONTAINER HAS AN OPENING IN THE BOTTOM THEREOF, PROVIDING A LOW HEAT CONDUCTIVITY METAL BOTTOM PLATE FOR THE CONTAINER, WHICH PLATE HAS A PLURALITY OF APERTURES THEREIN ADJACENT ITS PERIPHERY, HEATING SAID BOTTOM PLATE TO A TIMPERATURE APPRECIABLY ABOVE THE MELTING POINT OF THE PLASTIC FORMING SAID CONTAINER, HEATING ONE SURFACE OF SAID CONTAINER ADJACENT SAID OPENING AND COOLING THE OPPOSITE SURFACE OF SAID CONTAINER,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |