§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4049790A Expired / Lapsed US ⏱️ 0.0 years remaining

Layered manganese compound of the formula CA2 MN3 O8

Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1976-06-03
•
Granted: 1977-09-20
•
Expires: 1996-06-03
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A new low temperature layered manganese compound of the formula Ca2Mn3O8 has unexpectedly been synthesized in pure form. The unit cell dimensions of this new compound have been determined by X-ray diffraction and reveal that the compound is monoclinic with lattice parameters of a=11.02 A, b=5.85 A, c=4.94 A, alpha =90 DEG , beta =109.80 DEG , gamma =90 DEG . The structure consists of pseudohexagonal Mn4+sheets with similar oxygen sheets on either side, giving a distorted octahedral coordination to the Mn4+. Every fourth Mn4+is missing in these layers, so their composition is Mn3O8 with chains of coordination octahedra linked by common edges (rutile type arrangement). The Ca ions are situated between the Mn3O8 layers.

Inventors

  • 👤 Harold S. Horowitz
  • 👤 John M. Longo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 21:33
CPC Classifications
C; C01; C01G; C01G45/00; C01G45/12; C01G45/1221; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/5825; C01P; C01P2002/00; C01P2002/70; C01P2002/77; C01P2006/00; C01P2006/12; C01P2006/40; Y; Y02; Y02E; Y02E60/00; Y02E60/10

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 44 words
A pure, single phase compound having a monoclinic structure and the approximate parameters a = 11.01 A, b = 5.84 A, C = 4.95 A, α = 90°, β = 109.80°, γ = 90° of the formula Ca 2 Mn 3 O 8 .
Claim 2
Dependent Claim 44 words
A pure, single phase compound having a monoclinic structure and the approximate parameters a = 11.01 A, b = 5.84 A, C = 4.95 A, α = 90°, β = 109.80°, γ = 90° of the formula Ca 2 Mn 3 O 8 .
Claim 3
Dependent Claim 22 words
The compound of claim 1 which has a surface area ranging from about 20 m 2 /g to 50 m 2 /g.

References Cited (Backward Citations)

US2703354A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-19 1981-03-21 1981-09-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-19 1985-03-21 1985-09-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-19 1989-03-21 1989-09-20 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag