Patent US492775A successfully refreshed from Google Patents.
US3661838A
Expired / Lapsed
US
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Scented plastic composition
Assignee: Individual
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Filing: 1970-03-09
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Granted: 1972-05-09
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Expires: 1990-03-09
Abstract
Abstract A SCENTED PLASTIC COMPOSITION CAPABLE OF EMITTING A SCENT IS OBTAINED BY DISPERSING IN A GAS-PERMEABLE PLASTIC MATERIAL A POROUS FINELY DIVIDED SILICA POWDER HAVING ADSORBED THEREON A LIQUID SCENT-EMITTING SUBSTANCE, SUCH AS A FLORAL PERFUME OR AN ESSENTIAL OIL. PROCESSES OF PREPARATION ARE DESCRIBED.
Inventors
- 👤 Fumio Enomoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:56
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/18; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/042; A61L9/046; C; C08; C08K; C08K9/00; C08K9/12
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |