US Patent No: 6,517,803
Number of patents in Portfolio can not be more than 2000
Highly crystalline Mn2O3 or Mn3O4 manganese oxides
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Feb 11, 2003
Issued date -
Apr 26, 2001
filing date -
09/842,968
serial no -
Expired
status
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Abstract
The present invention includes lithium manganese oxide spinel compounds having a low porosity, a high tap density and a high pellet density, and methods of preparing these compounds. In particular, the method comprises preparing a lithium manganese oxide with a spinel structure and having the formula: wherein: Li.sub.1+X Mn.sub.2-Y M.sub.m.sub..sub.1 .sup.1 M.sub.m.sub..sub.2 .sup.2 . . . M.sub.m.sub..sub.k .sup.k O.sub.4+Z M.sup.1, M.sup.2, . . . M.sup.k are cations different than lithium or manganese selected from the group consisting of alkaline earth metals, transition metals, B, Al, Si, Ga and Ge; X, Y, m.sub.1, m.sub.2, . . . , m.sub.k, each have a value between 0 and 0.2; Z has a value between -0.1 and 0.2; and X, Y, m.sub.1, m.sub.2, . . . m.sub.k are selected to satisfy the equation: Y=X+m.sub.1 +m.sub.2 + . . . +m.sub.k.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 11, 2014 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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