(19)
(11) EP 0 087 412 A1

(12)

(43) Date of publication:
07.09.1983 Bulletin 1983/36

(21) Application number: 81902540.0

(22) Date of filing: 04.09.1981
(51) International Patent Classification (IPC): 
D21C 7/ 00( . )
D21C 9/ 10( . )
(86) International application number:
PCT/US1981/001187
(87) International publication number:
WO 1983/000816 (17.03.1983 Gazette 1983/07)
(84) Designated Contracting States:
AT DE FR SE

(71) Applicant: WEYERHAEUSER COMPANY
Tacoma, WA 98477 (US)

(72) Inventors:
  • BATTAN, Howard R.
    Auburn, WA 98002 (US)
  • BENTVELZEN, Joseph M.
    Sumner, WA 98390 (US)
  • BEPPLE, Henry
    Kamloops, BC, V2C 1M4 (CA)
  • CROSBY, Gerald D.
    Seattle, WA 98155 (US)
  • FLECK, John A.
    Enumclaw, WA 98022 (US)
  • JUSTICE, Dennis H.
    Sumner, WA 98390 (US)
  • MEREDITH, Michael D.
    Federal Way, WA 98003 (US)
  • TORREGROSSA, Louis O.
    Columbus, MS 39701 (US)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Maximilianstrasse 58
D-80538 München
D-80538 München (DE)

   


(54) METHOD AND APPARATUS FOR MIXING PULP WITH OXYGEN