公开(公告)号：DE717249C

公开(公告)日：1942-02-09

申请号：DESC115186

申请日：1938-03-04

Applicant: SCHAEFER WILHELM

Inventor： SCHAEFER WILHELM

IPC: E04H4/16

公开(公告)号：DE646251C

公开(公告)日：1937-06-11

申请号：DESC109006

申请日：1936-01-19

Applicant: SCHAEFER WILHELM

IPC: B66F11/00 ,  B66F19/00 ,  E04F21/20 ,  E04G21/16

公开(公告)号：DE586484C

公开(公告)日：1933-10-21

申请号：DEE0042896

Applicant: FRITZ ECKERT ,  SCHAEFER WILHELM

IPC: E04D13/12

公开(公告)号：ES129189A1

公开(公告)日：1933-04-01

申请号：ES129189

申请日：1932-12-31

Applicant: SCHAEFER WILHELM ,  PANTHER ALBERT

公开(公告)号：AT126434B

公开(公告)日：1932-01-25

申请号：AT126434D

申请日：1929-03-05

Applicant: SCHAEFER WILHELM DR ING

Inventor： SCHAEFER WILHELM DR ING

公开(公告)号：DE507184C

公开(公告)日：1930-09-13

申请号：DESC088777

Applicant: SCHAEFER WILHELM

IPC: E05D15/06

公开(公告)号：GB289848A

公开(公告)日：1928-09-13

申请号：GB810728

申请日：1928-03-16

Applicant: SCHAEFER WILHELM ,  ERZ UND KOHLE FLOTATION G M B

IPC: B03D1/002

Abstract: 289,848. Schõfer, W., and Erz-und Kohle-Flotation Ges. May 4, 1927, [Convention date]. Flotation processes for the treatment of ores, coal, graphite, &c. are carried out in the presence of polythionates or other derivatives of polythionic acids, particularly polythionates of polyvalent metals. There may also be present substances such as acids or alkalies which yield or produce hydrogen ions or hydroxyl ions in the pulp, and such substances may be applied successively for effecting differential flotation of constituents or groups of constituents present.

公开(公告)号：DE426573C

公开(公告)日：1926-03-12

申请号：DESC070370

申请日：1924-04-30

Applicant: SCHAEFER WILHELM

IPC: B42F13/02

公开(公告)号：DE418592C

公开(公告)日：1925-09-11

申请号：DESC071746

申请日：1924-10-09

Applicant: SCHAEFER WILHELM

IPC: E05B55/00 ,  E05B55/02

公开(公告)号：DE383667C

公开(公告)日：1923-10-16

申请号：DESC065187

申请日：1922-06-16

Applicant: SCHAEFER WILHELM

IPC: D03C3/24