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US4727167A Expired / Lapsed US ⏱️ 0.0 years remaining

Intercalations of crystalline lithium aluminates

Assignee: FMC Corp
•
Filing: 1986-04-14
•
Granted: 1988-02-23
•
Expires: 2006-04-14
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Abstract

Abstract Useful compositions are prepared by incorporating into organic materials, crystalline lithium aluminates which conform substantially to the empirical formula (LiA.sub.x).sub.y.2Al(OH).sub.3.nH.sub.2 O where A represents one or more anions and/or negative-valence radicals, where x represents a quantity of A ions and/or radicals sufficient to substantially satisfy the valence requirements of the Li, where y is a numerical value sufficient to maintain the crystalline structure, and where n represents the number of waters of hydration, if any.

Inventors

  • 👤 John L. Burba, III
  • 👤 William C. Bauman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 20:07
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/78; C01F7/784; B; B82; B82Y; B82Y30/00; C07; C07C; C07C53/00; C07C53/126; C10; C10M; C10M125/00; C10M129/00; C10M129/02; C10M129/26; C10M129/28; C10M129/38; C10M129/40; C10M159/00; C10M159/12; C10M159/18; C01P; C01P2002/00; C01P2002/20; C01P2002/22; C01P2002/70; C01P2002/78; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/64; C01P2006/00; C01P2006/60; C10M2201/00; C10M2201/06; C10M2201/0606; C10M2201/061; C10M2201/0616; C10M2201/062; C10M2201/0626; C10M2201/063; C10M2201/065; C10M2201/0656; C10M2201/066; C10M2201/0666; C10M2201/08; C10M2201/0806; C10M2201/085; C10M2201/0856; C10M2201/086; C10M2201/0866; C10M2201/087; C10M2201/0876; C10M2201/10; C10M2201/1013; C10M2201/102; C10M2201/1026; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/1225; C10M2207/125; C10M2207/126; C10M2207/1265; C10M2207/16; C10M2207/166; C10M2207/18; C10M2207/186; C10M2207/20; C10M2207/206; C10M2207/24; C10M2207/246; C10M2227/00; C10M2227/09; C10N; C10N2010/00; C10N2010/02; C10N2010/06; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 106 words
Crystalline lithium aluminate compounds conforming essentially to the formula (Li+A.sup.-v.sub.l/v).sub.y.2Al(OH).sub.3.nH.sub.2 O wherein A represents a multivalent radical of a polycarboxylic compound, said A conforming to the formula R(COO.sup.-).sub.x where x is a numerical value of at least 4, and where R is an organic moiety to which the carboxylic groups are attached, where v is a valence of at least 4, where l/v is a quantity of A ions or radicals sufficient to substantially satisfy the valence requirements of Li, where y is a numerical value at least sufficient to maintain the crystalline structure, and where n represents zero or the number of waters of hydration.
Claim 2
Dependent Claim 106 words
Crystalline lithium aluminate compounds conforming essentially to the formula (Li+A.sup.-v.sub.l/v).sub.y.2Al(OH).sub.3.nH.sub.2 O wherein A represents a multivalent radical of a polycarboxylic compound, said A conforming to the formula R(COO.sup.-).sub.x where x is a numerical value of at least 4, and where R is an organic moiety to which the carboxylic groups are attached, where v is a valence of at least 4, where l/v is a quantity of A ions or radicals sufficient to substantially satisfy the valence requirements of Li, where y is a numerical value at least sufficient to maintain the crystalline structure, and where n represents zero or the number of waters of hydration.
Claim 3
Dependent Claim 23 words
The crystalline compound of claim 1 wherein A represents the multivalent radical of ethylenediamine tetraacetic acid, pyromellitic acid, polyacrylic acid, or polymethacrylic acid.
Claim 4
Dependent Claim 16 words
The crystalline compound of claim 1 wherein A represents the multivalent radical of ethylenediamine tetraacetic acid.
Claim 5
Dependent Claim 15 words
The crystalline compound of claim 1 wherein A represents the multivalent radical of pyromellitic acid.
Claim 6
Dependent Claim 15 words
The crystalline compound of claim 1 wherein A represents the multivalent radical of polyacrylic acid.
Claim 7
Dependent Claim 15 words
The crystalline compound of claim 1 wherein A represents the multivalent radical of polymethacrylic acid.

References Cited (Backward Citations)

US4116858A Cited
US4116857A Cited
US4116856A Cited
US4348297A Cited
US4348295A Cited
US4348296A Cited
US4461714A Cited
US4477367A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-02-22 1991-08-24 1992-02-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-02-22 1995-08-24 1996-02-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-02-22 1999-08-24 2000-02-23 $7700.00 Window Closed / Lapsed

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