Appeal No. 1997-2265 Application No. 08/369,207 chlorinating a composition comprising chiefly 1,1,1-trichloroethane and a contaminating amount of 1,2-dichloroethane (see claim 2 on appeal and the Brief, pages 2-3). A copy of claim 2 on appeal is reproduced below: 2. A method comprising chlorinating a composition comprising chiefly 1,1,1-trichloroethane and a contaminating amount of 1,2-dichloroethane to reduce the concentration of said 1,2-dichloroethane. The following references have been cited by the examiner as evidence of obviousness: Bursack et al. (Bursack) 3,658,657 Apr. 25, 1972 Gordon et al. (Gordon) 3,919,337 Nov. 11,1 1975 Claim 2 stands rejected under 35 U.S.C. � 103 as unpatentable over Bursack in view of Gordon (Answer, page 3). We reverse this rejection essentially for the reasons set forth on pages 3-7 of the Brief. We add the following comments primarily for emphasis. OPINION The examiner states that Bursack discloses a process for 1The examiner has incorrectly listed and discussed this reference as “Gorden” in the Answer (e.g., Answer, pages 2 and 3). 3Page: Previous 1 2 3 4 5 6 7 8 9 NextLast modified: November 3, 2007