Patent US3950591A successfully refreshed from Google Patents.
US3950591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glassy or crystalline material for phototropic thin layers
Assignee: Schott AG
•
Filing: 1972-11-07
•
Granted: 1976-04-13
•
Expires: 1992-11-07
Abstract
Abstract An article comprising a substrate forming a body portion of the article and a reversible phototropic coating thereon, the coating comprising a glassy or crystalline composition of the system Me a + , X, Me b + wherein: Me a + is a photosensitive metal of valence a + , X is an anion, and Me b + is a metal of valence b + Me a + , X, and Me b + being compatible in proportion to provide said reversible phototropic coating. Typically Me a + is Ag 1 + , Cd 2 + , Hg 2 + , or Pb 2 +; X is a halogen anion; and Me b + is Pb 2 + , Zn 2 + , Sn 4 + , Tl 3 + , an alkali metal cation or an alkali earth metal cation.
Inventors
- 👤 Georg Gliemeroth
- 👤 Lothar Meckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:42
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/04; C03C4/06; G; G02; G02F; G02F1/00; G02F1/01; G02F1/17; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
113 words
A transparent article comprising a transparent substrate forming a body portion of the article and a transparent reversible phototropic coating thereon, the coating comprising a glassy or crystallline ternary composition of the system Me a + , X, Me b + , Me a + , X, and Me b + being compatible and in proportion to provide said reversible phototropic coating wherein: Me a + is of the elements Ag, Pb, Cd, Hg, Zn, In, Ti, Ga, Sn, Sb, Ba, Bi, Au, Te, and As, X is a halogen anion, and, Me b + is of the elements Pb, Zn, Sn, Tl + 3 , the alkali metals and alkali earth metals.
Claim 2
Dependent Claim
113 words
A transparent article comprising a transparent substrate forming a body portion of the article and a transparent reversible phototropic coating thereon, the coating comprising a glassy or crystallline ternary composition of the system Me a + , X, Me b + , Me a + , X, and Me b + being compatible and in proportion to provide said reversible phototropic coating wherein: Me a + is of the elements Ag, Pb, Cd, Hg, Zn, In, Ti, Ga, Sn, Sb, Ba, Bi, Au, Te, and As, X is a halogen anion, and, Me b + is of the elements Pb, Zn, Sn, Tl + 3 , the alkali metals and alkali earth metals.
Claim 3
Dependent Claim
11 words
Article according to claim 1, wherein b is 1 or 2.
Claim 4
Dependent Claim
7 words
Article according to claim 1, wherein a=b-1.
Claim 5
Dependent Claim
74 words
Article according to claim 1, wherein Me a + is Ag 1 + , Cd 2 + , Hg 2 + , or Pb 2 + ; Me b + is K 1 + , Pb 2 + , Mg 2 + , Rb 1 + , Na 1 + , Tl 3 + , Li 1 + , Zn 2 + or Sn 4 + , and X is chloro, fluoro, or bromo.
Claim 6
Dependent Claim
14 words
Article according to claim 4, wherein Me a + is Ag + 1 .
Claim 7
Dependent Claim
36 words
Article according to claim 4, said components of said system being in the proportion of a eutectic composition of a compound of Me a + and X and a compound of Me b + and X.
Claim 8
Dependent Claim
10 words
Article according to claim 6, the substrate being a glass.
Claim 9
Dependent Claim
11 words
Article according to claim 6, the substrate being a synthetic plastic.
Claim 10
Dependent Claim
45 words
Article according to claim 1, wherein Me a + is Ag 1 + , Hg 2 + , or Cd 2 + ; X is chloro or bromo; and Me b + is K 1 + , Pb 2 + , Mg 2 + .
Claim 11
Dependent Claim
36 words
Article according to claim 1, said components of said system being in the proportion of a eutectic composition of a compound of Me a + and X and a compound of Me b + and X.
Claim 12
Dependent Claim
9 words
Article according to claim 1, wherein X is halogen.
Claim 13
Dependent Claim
12 words
Article according to claim 1, wherein X is chloro, fluoro, or bromo.
Claim 14
Dependent Claim
9 words
Article according to claim 1, wherein 9+ = b+.
Claim 15
Dependent Claim
28 words
Article according to claim 1, the coating being stabilized against becoming hygroscopic by Si, B, P, Ge, Al, Sn, Zr, Zn, alkali earth metals, rare earths or oxygen.
Claim 16
Dependent Claim
10 words
Article according to claim 1, the substrate being a glass.
Claim 17
Dependent Claim
11 words
Article according to claim 1, the substrate being a synthetic plastic.
Claim 18
Dependent Claim
18 words
Article according to claim 1, said article being without an acceptor coating for photosensitive ions of the coating.
Claim 19
Dependent Claim
112 words
A transparent article comprising a transparent substance forming a body portion of the article and a transparent reversible phototropic coating thereon, the coating comprising a glassy or crystalline ternary composition of the system Me a + , X, Me b + , Me a + , X, and Me b + being compatible and in proportion to provide said reversible phototropic coating, wherein: Me a + is of the elements Ag, Pb, Cd, Zn, In, Ti, Ga, Sn, Sb, Ba, Bi, Au, Te, and As, X is a halogen anion, and, Me b + is of the elements Pb, Zn, Sn, Tl + 3 , the alkali metals and alkali earth metals.
Claim 20
Dependent Claim
112 words
A transparent article comprising a transparent substance forming a body portion of the article and a transparent reversible phototropic coating thereon, the coating comprising a glassy or crystalline ternary composition of the system Me a + , X, Me b + , Me a + , X, and Me b + being compatible and in proportion to provide said reversible phototropic coating, wherein: Me a + is of the elements Ag, Pb, Cd, Zn, In, Ti, Ga, Sn, Sb, Ba, Bi, Au, Te, and As, X is a halogen anion, and, Me b + is of the elements Pb, Zn, Sn, Tl + 3 , the alkali metals and alkali earth metals.
Claim 21
Dependent Claim
11 words
Article according to claim 18, wherein b is 1 or 2.
Claim 22
Dependent Claim
7 words
Article according to claim 18, wherein a=b-1.
Claim 23
Dependent Claim
74 words
Article according to claim 18, wherein Me a + is Ag 1 + , Cd 2 + , Hg 2 + , or Pb 2 + ; Me b + is K 1 + , Pb 2 + , Mg 2 + , Rb 1 + , Na 1 + , Tl 3 + , Li 1 + , Zn 2 + or Sn 4 + , and X is chloro, fluoro, or bromo.
Claim 24
Dependent Claim
14 words
Article according to claim 21, wherein Me a + is Ag + 1 .
Claim 25
Dependent Claim
36 words
Article according to claim 21, said components of said system being in the proportion of a eutectic composition of a compound of Me a + and X and a compound of Me b + and X.
Claim 26
Dependent Claim
46 words
Article according to claim 18, wherein Me a + is Ag 1 + , Hg 2 + , or Cd 2 + ; X is chloro or bromo; and Me b + is K 1 + , Pb 2 + , or Mg 2 + .
Claim 27
Dependent Claim
36 words
Article according to claim 18, said components of said system being in the proportion of a eutectic composition of a compound of Me a + and X and a compound of Me b + and X.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |