Requests for Reexamination Filed

   Notice under 37 CFR 1.11(c). The requests for reexamination
listed below are open to inspection by the general public in the
indicated Examining Groups. Copies of the requests and related papers
may be obtained by paying the fee therefor established in the Rules (37
CFR 1.19(a)).
   In the event correspondence to the patent owner is not received, this
notice will be considered to be constructive notice to the patent owner
and reexamination will proceed (37 CFR 1.248(a)(5) and 1.525(b)).

   4,946,505, Reexam. S.N. 90/005,925, Feb. 13, 2001, Cl.
106/712, PROCESS FOR DYEING CONCRETE, Axel E. Jungk, Owner of Record:
Chemische Werke Brockhues AG, Walluf, Germany, Attorney or
Agent: Cushman Darby and Cushman, Washington, DC, Ex. Gp.: 1755,
Requester: Charles R. Wolfe, Jr., Blank, Rome, Comisky & McCauley,
Washington, DC

   5,952,523, Reexam. S.N. 90/005,927, Feb. 14, 2001, Cl.
560/241.1, METHOD FOR PRODUCING VINYL ACETATE, Vasilis Papavassiliou,
et. al, Owner of Record: Praxair Technology, Inc., Danbury, CT,
Attorney or Agent: Dale Lynn Carlson, Wiggin and Dana, New Haven,
CT, Ex. Gp.: 1623, Requester: Owner

   6,040,467, Reexam. S.N. 90/005,926, Feb. 13, 2001, Cl.
594/534, HIGH PURITY OXYGEN FOR ETHYLENE OXIDE PRODUCTION, Vasilis
Papavassiliou, et. al., Owner of Record: Praxair Technology,
Inc., Danbury, CT, Attorney or Agent: Dale Lynn Carlson, Wiggin
and Dana, New Haven, CT, Ex. Gp.: 1625, Requester: Owner