Patent US3506582A successfully refreshed from Google Patents.
US3506582A
Expired / Lapsed
US
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Drain cleaner composition and process
Assignee: Bayer Corp
•
Filing: 1966-11-10
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Granted: 1970-04-14
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Expires: 1986-11-10
Abstract
No abstract record available.
Inventors
- 👤 Donald Paul Gertzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:55
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/12; C11D3/00; C11D3/0005; C11D3/0052; C11D3/16; C11D3/38; C11D3/386; C11D3/38672; C11D7/22; C11D7/26; C11D7/265; C11D7/267
Claims Analysis
Total Claims: 0
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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) | 1973-04-13 | 1973-10-13 | 1974-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-13 | 1977-10-13 | 1978-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-13 | 1981-10-13 | 1982-04-14 | $7700.00 | Window Closed / Lapsed |