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Patent US2652182A successfully refreshed from Google Patents.
US2652182A
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Coated rubber stopper and process for preparing same
Assignee: Pfizer Inc
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Filing: 1949-09-15
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Granted: 1953-09-15
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Expires: 1969-09-15
Abstract
No abstract record available.
Inventors
- 👤 Robert R Umbdenstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
B; B65; B65D; B65D39/00; B65D39/0005; B65D39/0011; B65D2539/00; B65D2539/001; B65D2539/008
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
A PROCESS FOR STOPPERING PHARMACEUTICAL CONTAINERS WHICH COMPRISES COATING RUBBER STOPPERS WITH A THIN FILM OF A SILICONE OIL, STERILIZING THE COATED STOPPER WITH STEAM AT ELEVATED PRESSURE, DRYING THE STERILIZED STOPPERS AND INSERTING THE SAME UNDER ASEPTIC CONDITIONS IN THE MOUTHS OF SAID PHARMACEUTICAL CONTAINERS.
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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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |