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Class Information
Number: 196
Name: Mineral oils: apparatus >
Description: This class relates to apparatus for treating, refining, or recovering mineral oils such as petroleum, coal tar, pitch, asphalt or related products, not elsewhere classified. Included specifically in this class are apparatus for dewaxing, solvent extraction or refining of such mineral oils as well as stills designed for mineral oil distillation and condensers peculiarly adapted and limited to the mineral oil art.










Class Number Class Name No. of Patents
196/98

Combined vaporizing and condensing

41
196/99

Condensate returned to vaporizer

10
196/100

Columns

37
196/102

Condenser or collector in vaporizer

9
196/103

Heads

2
196/138

Condensing

19
196/141

Automatically controlled temperature

16
196/140

Contact with cooling fluid

19
196/139

Dephlegmators or fractionating columns

24
196/14.5

Dewaxing

21
196/155

Miscellaneous

16
196/46

Refining

73
196/46.1

With filtration

64
196/14.52

Solvent extraction

162
196/104

Vaporizing

5
196/137

Attachments

10
196/132

Automatic control

90
196/122

Carbon removers

24
196/123

Circulators or agitators

6
196/125

Baffles

12
196/126

Fluid injectors

14
196/124

Mechanical

2
196/129

Depending legs or spur tubes

0
196/130

Bottoms

3
196/131

Unheated

0
196/135

Feeders

22
196/128

Films or sprays

32
196/127

Fluid injectors

37
196/116

Furnaces and flues

31
196/117

Internal flues

8
196/134

Heat recovery from vapor or residuum

27
196/119

Jackets

1
196/118

Liquid baths

4
196/112

Rotary

10
196/133

Special features of construction

25
196/120

Special means for heating

15
196/121

Electric

21
196/115

Special shapes

24
196/105

Systems

8
196/106

Series stills

11
196/107

Tube and drum

10
196/108

Cyclic circulation

2
196/109

Drum above tube

0
196/110

Tubular

35
196/114

Vacuum

40
196/136

Vapor outlets

16
196/111

With partitions

48
 
 
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