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)).
   
   4,673,035, Reexam. No. 90/004,892, Jan. 14, 1998, Cl. 166/077.2,
METHOD AND APPARATUS FOR INJECTION OF TUBING INTO WELLS, Thomas C.
Gipson, Owner of Record: Fleet Cementers, Inc., Attorney or Agent: None,
Ex. Gp.: 3625, Requester: Vita International, Houston, Tex., c/o Wendy
K. Buskop, Chamberlain, Hrdlicka, White, Williams and Martin, Houston,
Tex.
   
   4,925,527, Reexam. No. 90/004,891, Jan. 13, 1998, Cl. 162/015, METHOD
FOR THE RECOVERY OF TURPENTINE AND HEAT IN A REFINER PULPING PROCESS,
Rolf Ryham, Owner of Record: Ahlstromforetagen Svenska AB, Norkoping,
Sweden, Attorney or Agent: Thomas C. Pontani, Cohen Pontani & Lieberman,
New York, N.Y., Ex. Gp.: 1303, Requester: David T. Hunter, Lane Powell
Spears and Lubersky, Seattle, Wash.
   
   5,641,888, Reexam. No. 90/004,893, Jan. 14, 1998, Cl. 558/123,
SYNTHESIS OF AN O,Oft-DIESTERS OF THIOPHOSPHORIC ACID, AN O-ESTER OF
THIOPHOSPHONIC ACID, OR A THIOPHOSPHINIC ACID, Christoph Holzner, et.
al., Owner of Record: Bayer Aktiengesellschaft, Leverkusen, Germany,
Attorney or Agent: Sprung Kramer Schaefer and Briscoe, Tarrytown, N.Y.,
Ex. Gp.: 1201, Requester: Owner