Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2000-11-27
2002-12-10
Acquah, Samuel A. (Department: 1711)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S402200, C428S402240, C428S206000, C106S031250, C106S031260, C106S031330, C106S031400
Reexamination Certificate
active
06492025
ABSTRACT:
BACKGROUND OF THE INVENTION
Microcapsules have a variety of uses. Various microencapsulation techniques are available to fabricate these microcapsules. New microcapsules and microencapsulation techniques are desired to expand the applications in which microencapsulation technology may be useful.
Conventional microcapsules and microencapsulation techniques are described in “Kirk-Othmer Encyclopedia of Chemical Technology,” Vol. 15, pp. 470-493 (3
rd
Edition 1981); Klaveness et al., U.S. Pat. No. 6,110,444; Jason et al., U.S. Pat. No. 5,540,927; Baker et al., U.S. Pat. No. 4,808,408.
The present microcapsules and microencapsulation technique may be used in the manufacture of components for display devices. Conventional display devices (some including microcapsules), components for display devices, and the manufacture of such display devices and their components are described in Sheridon, U.S. Pat. No. 5,604,027; Jacobson et al., U.S. Pat. No. 5,961,804; Jacobson et al., U.S. Pat. No. 5,930,026; Albert et al., U.S. Pat. No. 6,067,185; Crowley et al., U.S. Pat. No. 5,262,098; Sheridon, U.S. Pat. No. 5,344,594; and Stefik, U.S. Pat. No. 5,723,204.
SUMMARY OF THE INVENTION
The present invention is accomplished in embodiments by providing a composition comprising: a plurality of microcapsules each including one to five particles in a liquid droplet, and a complex coacervation induced shell encapsulating the liquid droplet and the one to five particles.
There is also provided in embodiments a composition comprising: a plurality of microcapsules each including a single particle in a liquid droplet, and a complex coacervation induced shell encapsulating the liquid droplet and the single particle.
REFERENCES:
patent: 4808408 (1989-02-01), Baker et al.
patent: 5262098 (1993-11-01), Crowley et al.
patent: 5344594 (1994-09-01), Sheridon
patent: 5540927 (1996-07-01), Jason et al.
patent: 5604027 (1997-02-01), Sheridon
patent: 5723204 (1998-03-01), Stefik
patent: 5930026 (1999-07-01), Jacobson et al.
patent: 5961804 (1999-10-01), Jacobson et al.
patent: 6067185 (2000-05-01), Albert et al.
patent: 6110444 (2000-08-01), Klaveness et al.
“Kirk-Othmer Encyclopedia of Chemical Technology,” vol. 15, pp. 470-493 (3rdEdition 1981).
Chopra Naveen
Kazmaier Peter M.
Torres Francisco E.
Acquah Samuel A.
Soong Zosan S.
Xerox Corporation
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