Stock material or miscellaneous articles – Light transmissive sheets – with gas space therebetween and...
Reexamination Certificate
2007-01-16
2007-01-16
Nakarani, D. S. (Department: 1773)
Stock material or miscellaneous articles
Light transmissive sheets, with gas space therebetween and...
C359S288000, C428S438000, C428S439000
Reexamination Certificate
active
10484171
ABSTRACT:
There are provided laminated bodies or laminated body-containing windows, which comprise isotropic aqueous solutions obtained by dissolving a water-soluble polysaccharide derivative having nonionic amphipathic functional groups in an aqueous medium composed of water and an amphipathic substance, laminated between plates that are at least partially transparent and allow direct vision of the isotropic aqueous solutions, wherein there are added to the isotropic aqueous solutions in appropriate amounts ultraviolet absorbers comprising nonionic or ionic benzophenone derivatives or benzotriazole derivatives which are highly weather resistant and uniformly dissolve in the isotropic aqueous solutions. The isotropic aqueous solutions are transparent and become opaque upon irradiation with light, and exhibit stable reversible change, in order to provide vastly improved weather resistance to the laminated bodies against exposure to sunlight rays over prolonged periods of time.
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Affinity Co, Ltd.
Miller, White, Zelano & Branigan, P.C.
Nakarani D. S.
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