US3932690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent, phototropic laminate
Assignee: Schott AG
•
Filing: 1974-04-29
•
Granted: 1976-01-13
•
Expires: 1994-04-29
Abstract
Abstract A transparent phototropic laminate comprising a light transmitting substrate, a inorganic phototropic layer attached to the substrate and a polymeric layer attached to the phototropic layer.
Inventors
- 👤 Georg Gliemeroth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:12
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10018; B32B17/10036; B32B17/10165; B32B17/10339; B32B17/10431; B32B17/10467; B32B17/10486; B32B27/30; B32B27/308; B32B2255/00; B32B2255/10; B32B2307/00; B32B2307/40; B32B2307/402; B32B2333/00; B32B2333/04; B32B2333/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
78 words
A transparent laminate that passes less light in the presence of actinic light than in the absence of actinic light, said laminate comprising: A. a light-transmitting substrate selected from the group consisting of glass and transparent plastic sheet; B. a light-transmitting phototropic layer consisting essentially of silver halides and copper halides which darkens in the presence of actinic light said phototropic layer being attached to the substrate; C. a light-transmitting plastic sheet layer attached to the phototropic layer.
Claim 2
Dependent Claim
78 words
A transparent laminate that passes less light in the presence of actinic light than in the absence of actinic light, said laminate comprising: A. a light-transmitting substrate selected from the group consisting of glass and transparent plastic sheet; B. a light-transmitting phototropic layer consisting essentially of silver halides and copper halides which darkens in the presence of actinic light said phototropic layer being attached to the substrate; C. a light-transmitting plastic sheet layer attached to the phototropic layer.
Claim 3
Dependent Claim
35 words
A transparent phototropic laminate of claim 1 further comprising: D. a light-transmitting layer selected from the group consisting of glass and transparent plastic sheet said layer being attached to the light-transmitting plastic sheet, designated C.
Claim 4
Dependent Claim
27 words
A transparent phototropic laminate of claim 1 wherein the phototropic material is a mixture of copper halides and silver halides wherein the halide is chloride or bromide.
Claim 5
Dependent Claim
40 words
A transparent phototropic laminate of claim 1 wherein the phototropic material consists essentially of 4 to 60 atomic percent of silver ions, 2 to 60 atomic percent of copper ions, and 15 to 87 atomic percent of C1 or Br.
Claim 6
Dependent Claim
30 words
A transparent phototropic laminate of claim 2 wherein a coloring material is included in one or more of the layers identified above as layer A, layer C and/or layer D.
Claim 7
Dependent Claim
88 words
A transparent phototropic laminate that passes less light in the presences of actinic light than in the absence of actinic light, said laminate comprising: A. a light transmitting substrate selected from the group consisting of glass and plastic; B. a vacuum deposited light transmitting phototropic layer consisting essentially of CuX and AgX in a molar ratio of 3:10 to 10:3 wherein X is C1 or Br; said phototropic layer being attached to the substrate; C. a light transmitting polymeric layer of polyvinyl butyrate attached to the phototropic layer.
Claim 8
Dependent Claim
88 words
A transparent phototropic laminate that passes less light in the presences of actinic light than in the absence of actinic light, said laminate comprising: A. a light transmitting substrate selected from the group consisting of glass and plastic; B. a vacuum deposited light transmitting phototropic layer consisting essentially of CuX and AgX in a molar ratio of 3:10 to 10:3 wherein X is C1 or Br; said phototropic layer being attached to the substrate; C. a light transmitting polymeric layer of polyvinyl butyrate attached to the phototropic layer.
Claim 9
Dependent Claim
76 words
A transparent phototropic laminate that passes less light in the presence of actinic light than in the absence of actinic light, said laminate consisting essentially of: A. a light-transmitting substrate; B. a vacuum deposited light-transmitting phototropic layer consisting essentially of CuX and AgX in a molar ratio of 3:10 to 10:3 wherein X is C1 or Br; said phototropic layer being attached to the substrate; C. a layer of polyvinyl butyrate attached to the phototropic layer.
Claim 10
Dependent Claim
76 words
A transparent phototropic laminate that passes less light in the presence of actinic light than in the absence of actinic light, said laminate consisting essentially of: A. a light-transmitting substrate; B. a vacuum deposited light-transmitting phototropic layer consisting essentially of CuX and AgX in a molar ratio of 3:10 to 10:3 wherein X is C1 or Br; said phototropic layer being attached to the substrate; C. a layer of polyvinyl butyrate attached to the phototropic layer.
Claim 11
Dependent Claim
68 words
A transparent phototropic laminate that passes less light in the presences of actinic light than in the absence of actinic light, said laminate having: A. a light-transmitting substrate; B. a light-transmitting phototropic layer consisting essentially of CuX and AgX in a molar ratio of 1:10 to 10:1 wherein X is halogen; said phototropic layer being attached to the substrate; C. a light-transmitting layer attached to the phototropic layer.
Claim 12
Dependent Claim
68 words
A transparent phototropic laminate that passes less light in the presences of actinic light than in the absence of actinic light, said laminate having: A. a light-transmitting substrate; B. a light-transmitting phototropic layer consisting essentially of CuX and AgX in a molar ratio of 1:10 to 10:1 wherein X is halogen; said phototropic layer being attached to the substrate; C. a light-transmitting layer attached to the phototropic layer.
References Cited (Backward Citations)
US3436353A
Cited
US3266370A
Cited
US3219993A
Cited
US3197296A
Cited
US3466216A
Cited
US3512869A
Cited
US3561269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |