US4029750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid particulate lobular AlCl3
Assignee: Alcoa Corp
•
Filing: 1974-08-26
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Granted: 1977-06-14
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Expires: 1994-08-26
Abstract
Abstract Method and apparatus for directly desubliming gaseous aluminum chloride to solid form in a fluidized bed of solid particles of aluminum chloride at controlled temperatures for production of selectively constituted solid particulate aluminum chloride.
Inventors
- 👤 Ronald C. Schoener
- 👤 Larry K. King
- 👤 Lester L. Knapp
- 👤 Nicholas Kloap
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:22
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/48; C01F7/56; C01F7/58; C01F7/60; C01P; C01P2004/00; C01P2004/01; C01P2004/03; C01P2004/51; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/20; C01P2006/80; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
35 words
Solid lobular AlCl 3 of essentially curvilinear contour compositely constituted of autogeneously bonded pluralities of smaller sized particles of essentially spheroidate character and characterized by the absence of planar exterior surfaces and sharp proturberant angles.
Claim 2
Dependent Claim
35 words
Solid lobular AlCl 3 of essentially curvilinear contour compositely constituted of autogeneously bonded pluralities of smaller sized particles of essentially spheroidate character and characterized by the absence of planar exterior surfaces and sharp proturberant angles.
Claim 3
Dependent Claim
19 words
Aluminum chloride as set forth in claim 1 further characterized by a bulk density of about 75-105 lbs./cu. ft.
Claim 4
Dependent Claim
20 words
Aluminum chloride as set forth in claim 1 having an average particle size distribution of about 40 to 350 mesh.
Claim 5
Dependent Claim
57 words
Solid particulate AlCl 3 of essentially lobular character presenting an essentially bullate surface and having an average particle size of less than about 40 mesh with the particles thereof compositely constituted of agglomerated pluralities of smaller sized particles of essentially spheroidate character and characterized by the absence of fracture induced planar exterior surfaces and sharp protuberant angles.
Claim 6
Dependent Claim
57 words
Solid particulate AlCl 3 of essentially lobular character presenting an essentially bullate surface and having an average particle size of less than about 40 mesh with the particles thereof compositely constituted of agglomerated pluralities of smaller sized particles of essentially spheroidate character and characterized by the absence of fracture induced planar exterior surfaces and sharp protuberant angles.
Claim 7
Dependent Claim
19 words
Aluminum chloride as set forth in claim 4 further characterized by a bulk density of about 75-105 lbs/cu. ft.
Claim 8
Dependent Claim
20 words
Aluminum chloride as set forth in claim 4 having an average particle size distribution of about 40 to 350 mesh.
Claim 9
Dependent Claim
31 words
Solid lobular AlCl 3 compositely constituted of autogeneously bonded pluralities of similar sized particles of essentially spheroidate character characterized by the absence of fracture-induced planar exterior surfaces and sharp protuberant angles.
Claim 10
Dependent Claim
31 words
Solid lobular AlCl 3 compositely constituted of autogeneously bonded pluralities of similar sized particles of essentially spheroidate character characterized by the absence of fracture-induced planar exterior surfaces and sharp protuberant angles.
References Cited (Backward Citations)
US3786135A
Cited
US3878293A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |