US2561862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcium product
Assignee: Ethyl Corp
•
Filing: 1950-03-25
•
Granted: 1951-07-24
•
Expires: 1970-03-25
Abstract
No abstract record available.
Inventors
- 👤 Eugene F Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:51
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A STABLE, CRYSTALLINE, ELEMENTAL CALCIUM PRODUCT CONSISTING ESSENTIALLY OF AT LEAST 80% OF PLATELETS, THE MAJOR DIAMETERS OF WHICH VARY BETWEEN 1/8 INCH TO 1/300 INCH.
Claim 2
Dependent Claim
26 words
A STABLE, CRYSTALLINE, ELEMENTAL CALCIUM PRODUCT CONSISTING ESSENTIALLY OF AT LEAST 80% OF PLATELETS, THE MAJOR DIAMETERS OF WHICH VARY BETWEEN 1/8 INCH TO 1/300 INCH.
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) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |