WO200021152-A1  DATABASE WPI Section Ch, Week 9404 Derwent Publications Ltd., London, GB; Class F09, AN 94-032177 XP002105853 & JP 05 339748 A (MITSUBISHI HEAVY IND CO LTD), 21 December 1993 (1993-12-21);  PATENT ABSTRACTS OF JAPAN vol. 013, no. 302 (C-616), 12 July 1989 (1989-07-12) & JP 01 092350 A (OSAKA GAS CO LTD), 11 April 1989 (1989-04-11);  DATABASE WPI Section Ch, Week 9404 Derwent Publications Ltd., London, GB; Class F09, AN 94-032177 XP002105853&JP 05 339748 A (MITSUBISHI HEAVY IND CO LTD), 21 December 1993 (1993-12-21);  PATENT ABSTRACTS OF JAPAN vol. 013, no. 302 (C-616), 12 July 1989 (1989-07-12)&JP 01 092350 A (OSAKA GAS CO LTD), 11 April 1989 (1989-04-11)NL1010269-C2  DATABASE WPI Section Ch, Week 9404 Derwent Publications Ltd., London, GB; Class F09, AN 94-032177 XP002105853 & JP 05 339748 A (MITSUBISHI HEAVY IND CO LTD), 21 December 1993;  PATENT ABSTRACTS OF JAPAN vol. 013, no. 302 (C-616), 12 Juli 1989 & JP 01 092350 A (OSAKA GAS CO LTD), 11 April 1989;  DATABASE WPI Section Ch, Week 9404 Derwent Publications Ltd., London, GB; Class F09, AN 94-032177 XP002105853&JP 05 339748 A (MITSUBISHI HEAVY IND CO LTD), 21 December 1993;  PATENT ABSTRACTS OF JAPAN vol. 013, no. 302 (C-616), 12 Juli 1989&JP 01 092350 A (OSAKA GAS CO LTD), 11 April 1989;  DATABASE WPI Section Ch Week 9404, Derwent Publications Ltd., London, GB; Class F09, AN 94-032177, XP002105853;  PATENT ABSTRACTS OF JAPAN vol. 013, no. 302 (C - 616) 12 July 1989 (1989-07-12);  DATABASE WPI Section Ch Week 9404, Derwent Publications Ltd., London, GB; Class F09, AN 94-032177, XP002105853,relevantClaims[1],relevantPassages[&lt;pp&gt;A&lt;/pp&gt;];  PATENT ABSTRACTS OF JAPAN vol. 013, no. 302 (C - 616) 12 July 1989 (1989-07-12),relevantPassages[&lt;pp&gt;A&lt;/pp&gt;]EP1119881-B1  DATABASE WPI Section Ch, Week 9404 Derwent Publications Ltd., London, GB; Class F09, AN 94-032177 XP002105853 & JP 05 339748 A (MITSUBISHI HEAVY IND CO LTD), 21 December 1993 (1993-12-21);  PATENT ABSTRACTS OF JAPAN vol. 013, no. 302 (C-616), 12 July 1989 (1989-07-12) & JP 01 092350 A (OSAKA GAS CO LTD), 11 April 1989 (1989-04-11)