US3095382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for analysis of iron
Assignee: Hach Co
•
Filing: 1960-04-19
•
Granted: 1963-06-25
•
Expires: 1980-04-19
Abstract
No abstract record available.
Inventors
- 👤 Clifford C Hach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:44
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COMPOSITION USEFUL IN COLORIMETRIC ANALYSES FOR IRON CONSISTING ESSENTIALLY OF A MINOR AMOUNT OF A HETEROCYCLIC ORGANIC COMPOUND CONTAINING THE GROUP
Claim 2
Dependent Claim
22 words
A COMPOSITION USEFUL IN COLORIMETRIC ANALYSES FOR IRON CONSISTING ESSENTIALLY OF A MINOR AMOUNT OF A HETEROCYCLIC ORGANIC COMPOUND CONTAINING THE GROUP
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |