Patent US2344138A successfully refreshed from Google Patents.
US2344138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating method
Assignee: CHEMICAL DEVELOPMENTS Corp
•
Filing: 1941-01-16
•
Granted: 1944-03-14
•
Expires: 1961-01-16
Abstract
No abstract record available.
Inventors
- 👤 Folsom E Drummond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:04
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/44; C23C16/54; C23C16/545; C23C16/04; C23C16/042; C23C16/06; C23C16/16; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1947-03-14 | 1947-09-13 | 1948-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-03-14 | 1951-09-13 | 1952-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-03-14 | 1955-09-13 | 1956-03-14 | $7700.00 | Window Closed / Lapsed |