Optical: systems and elements – Optical modulator – Light wave temporal modulation
Reexamination Certificate
2002-08-02
2003-09-02
Dang, Hung Xuan (Department: 2873)
Optical: systems and elements
Optical modulator
Light wave temporal modulation
C359S267000, C359S270000, C359S273000, C252S582000
Reexamination Certificate
active
06614578
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates in general to ultraviolet stabilizing materials for use in electrochromic devices and, more particularly, to an ultraviolet stabilizing material associated with a solublizing moiety which serves to increase the solubility of the ultraviolet stabilizing material in an associated solvent relative to the same without such a solublizing moiety.
2. Background Art
Electrochromic devices have been known in the art for several years. Furthermore, experimentation associated with the utilization of various ultraviolet stabilizing materials has also been explored. While the utilization of such ultraviolet stabilizing materials in devices such as electrochromic mirrors and windows has been identified, the solubility characteristics of many of these ultraviolet stabilizing materials remains problematic for commercial applications especially where the particular device is routinely exposed to extreme climate variations.
It is therefore an object of the present invention to provide an ultraviolet stabilizing material with a solublizing moiety that remedies the aforementioned detriments and/or complications associated with the incorporation of the above-identified ultraviolet stabilizing materials into a suitable electrochromic medium at an operatively acceptable concentration.
SUMMARY OF THE INVENTION
The present invention is directed to an electrochromic medium for use in an electrochromic device comprising: (a) at least one solvent; (b) an anodic material; (c) a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic; and (d) an ultraviolet stabilizing material, wherein the ultraviolet stabilizing material includes a solublizing moiety which serves to increase solubility of the ultraviolet stabilizing material relative to the same without the solublizing moiety.
The present invention is also directed to an electrochromic device comprising: (a) a first substantially transparent substrate having an electrically conductive material associated therewith; (b) a second substrate having an electrically conductive material associated therewith; and (c) an electrochromic medium contained within a chamber positioned between the first and second substrates which comprises: (1) at least one solvent; (2) an anodic material; (3) a cathodic material, wherein both of the anodic and cathodic materials are electroactive and at least one of the anodic and cathodic materials is electrochromic; and (4) an ultraviolet stabilizing material, wherein the ultraviolet stabilizing material includes a solublizing moiety which serves to increase solubility of the ultraviolet stabilizing material relative to the same without the solublizing moiety.
These and other objectives of the present invention will become apparent in light of the present specification, claims, and drawings.
REFERENCES:
patent: 3766205 (1973-10-01), Heller et al.
patent: 4402573 (1983-09-01), Jones
patent: 4853471 (1989-08-01), Rody et al.
patent: 4902108 (1990-02-01), Byker
patent: 5032498 (1991-07-01), Rody et al.
patent: 5140455 (1992-08-01), Varaprasad et al.
patent: 5151816 (1992-09-01), Varaprasad et al.
patent: 5239406 (1993-08-01), Lynam
patent: 5457564 (1995-10-01), Leventis et al.
patent: 5679283 (1997-10-01), Tonar et al.
patent: 5724187 (1998-03-01), Varaprasad et al.
patent: 5770114 (1998-06-01), Byker et al.
patent: 5780160 (1998-07-01), Allemand et al.
patent: 5818636 (1998-10-01), Leventis et al.
patent: 5859722 (1999-01-01), Suga et al.
patent: 5910854 (1999-06-01), Varaprasad et al.
patent: 5998617 (1999-12-01), Srinivasa et al.
patent: 6002511 (1999-12-01), Varaprasad et al.
patent: 6154306 (2000-11-01), Varaprasad et al.
patent: 6183878 (2001-02-01), Berneth et al.
patent: 6187845 (2001-02-01), Renz et al.
patent: 6188505 (2001-02-01), Lomprey et al.
patent: 6193912 (2001-02-01), Theiste et al.
patent: 6241916 (2001-06-01), Claussen et al.
patent: 6262832 (2001-07-01), Lomprey et al.
patent: 6277307 (2001-08-01), Berneth et al.
patent: 6301038 (2001-10-01), Fitzmaurice et al.
patent: 6445486 (2002-09-01), Lomprey et al.
patent: 830456 (1980-04-01), None
patent: WO 97/30135 (1997-02-01), None
Baumann Kelvin L.
Giri Punam
Guarr Thomas F.
Kloeppner Leroy J.
Lomprey Jeffrey R.
Dang Hung Xuan
Gentex Corporation
King & Jovanovic, PLC
Tra Tuyen
LandOfFree
Ultraviolet stabilizing materials having a solublizing moiety does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultraviolet stabilizing materials having a solublizing moiety, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultraviolet stabilizing materials having a solublizing moiety will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3076361