US3870645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferromagnetic compositions of matter
Assignee: Yeda Research and Development Co Ltd
•
Filing: 1973-05-08
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Granted: 1975-03-11
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Expires: 1993-05-08
Abstract
Abstract A process for the measurement of peristalsis. A ferromagnetic composition for the measurement of peristalsis, for diagnostic and therapeutic purposes.
Inventors
- 👤 Ephraim H Frei
- 👤 Shmuel Yerushalmi
- 👤 Yusuf Benmair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:28
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/44; H01F1/445; A; A61; A61K; A61K49/00; A61K49/04; A61K49/0409
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
51 words
A ferromagnetic composition of matter for diagnostic purposes, consisting essentially of a magnetic physiologically acceptable ferrite, from the group consisting of magnesium ferrite, barium ferrite, manganese ferrite, manganese-zinc ferrite, magnesium-zinc ferrite, and nickel ferrite, and having incorporated therewith, at least one member from the group consisting of sorbitol and citric acid.
Claim 2
Dependent Claim
51 words
A ferromagnetic composition of matter for diagnostic purposes, consisting essentially of a magnetic physiologically acceptable ferrite, from the group consisting of magnesium ferrite, barium ferrite, manganese ferrite, manganese-zinc ferrite, magnesium-zinc ferrite, and nickel ferrite, and having incorporated therewith, at least one member from the group consisting of sorbitol and citric acid.
Claim 3
Dependent Claim
51 words
A FERROMAGNETIC COMPOSITION OF MATTER FOR DIAGNOSTIC PURPOSES, CONSISTING ESSENTIALLY OF A MAGNETIC PHYSIOLOGICALLY ACCEPTABLE FERRITE, FROM THE GROUP CONSISTING OF MAGNESIUM FERRITE, BARIUM FERRITE, MAGNETSES FERRITE, MANGANSES-ZINC FERRITE, MAGNESIUM-ZINC FERRITE, AND NICKEL FERRITE, AND HAVING INCORPORATED THEREWITH, AT LEAST ONE MEMBER FROM THE GROUP CONSISTING OF SORBITOL AND CITRIC ACID.
Claim 4
Dependent Claim
51 words
A FERROMAGNETIC COMPOSITION OF MATTER FOR DIAGNOSTIC PURPOSES, CONSISTING ESSENTIALLY OF A MAGNETIC PHYSIOLOGICALLY ACCEPTABLE FERRITE, FROM THE GROUP CONSISTING OF MAGNESIUM FERRITE, BARIUM FERRITE, MAGNETSES FERRITE, MANGANSES-ZINC FERRITE, MAGNESIUM-ZINC FERRITE, AND NICKEL FERRITE, AND HAVING INCORPORATED THEREWITH, AT LEAST ONE MEMBER FROM THE GROUP CONSISTING OF SORBITOL AND CITRIC ACID.
Claim 5
Dependent Claim
33 words
A ferromagnetic diagnostic composition as claimed in claim 1 wherein the sorbitol comprises 3 to 6 percent by weight and the citric acid comprises 0.3 to 0.6 percent by weight of the composition.
Claim 6
Dependent Claim
36 words
A ferromagnetic composition of matter according to claim 1 wherein the magnetic ferrite is selected from the group consisting of magnesium ferrite, barium ferrite, manganese ferrite, manganese-zinc ferrite, magnesium-zinc ferrite, nickel ferrite and mixtures of these.
Claim 7
Dependent Claim
26 words
A ferromagnetic diagnostic composition of matter according to claim 1 containing up to 30 percent by weight of the composition of small particle size barium sulfate.
Claim 8
Dependent Claim
31 words
A ferromagnetic composition according to claim 1, consisting essentially of 200 parts of magnesium ferrite, 3 to 6 percent sorbitol, 0.3 to 0.6 percent citric acid and about 30 parts water.
References Cited (Backward Citations)
US3741198A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |