US2453471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preserving caustic soda from contamination in metal containers
Assignee: Mathieson Chemical Corp
•
Filing: 1940-05-02
•
Granted: 1948-11-09
•
Expires: 1960-05-02
Abstract
No abstract record available.
Inventors
- 👤 Switzer John Lyman
- 👤 John C Michalek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:03
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; B; B65; B65D; B65D25/00; B65D25/14; Y; Y10; Y10S; Y10S220/00; Y10S220/917
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB191116277A
Cited
US1529056A
Cited
US1613674A
Cited
US1912371A
Cited
US1965627A
Cited
GB402877A
Cited
US2088140A
Cited
US2105567A
Cited
US2158281A
Cited
US2111342A
Cited
US2273822A
Cited
US2166557A
Cited
US2211689A
Cited
US2229616A
Cited
US2198939A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |