US3098753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porcelain enameling frit
Assignee: Eagle Picher Co
•
Filing: 1961-11-20
•
Granted: 1963-07-23
•
Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Harry J Van Dolah
- 👤 Otto C Linhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/02; C03C8/06; C03C4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A PORELAIN ENAMELING FRIT CONSISTING ESSENTIALLY OF:
Claim 2
Dependent Claim
7 words
A PORELAIN ENAMELING FRIT CONSISTING ESSENTIALLY OF:
References Cited (Backward Citations)
US2010776A
Cited
US2014816A
Cited
US2332424A
Cited
US2347187A
Cited
US2604410A
Cited
US2890964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |