Mineral oils: apparatus > Patents

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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	31
196/99	Condensate returned to vaporizer	8
196/100	Columns	35
196/102	Condenser or collector in vaporizer	7
196/103	Heads	2
196/138	Condensing	16
196/141	Automatically controlled temperature	15
196/140	Contact with cooling fluid	14
196/139	Dephlegmators or fractionating columns	18
196/14.5	Dewaxing	20
196/155	Miscellaneous	12
196/46	Refining	58
196/46.1	With filtration	53
196/14.52	Solvent extraction	141
196/104	Vaporizing	4
196/137	Attachments	7
196/132	Automatic control	86
196/122	Carbon removers	20
196/123	Circulators or agitators	5
196/125	Baffles	10
196/126	Fluid injectors	12
196/124	Mechanical	2
196/129	Depending legs or spur tubes	0
196/130	Bottoms	3
196/131	Unheated	0
196/135	Feeders	18
196/128	Films or sprays	31
196/127	Fluid injectors	30
196/116	Furnaces and flues	29
196/117	Internal flues	8
196/134	Heat recovery from vapor or residuum	26
196/119	Jackets	1
196/118	Liquid baths	3
196/112	Rotary	9
196/133	Special features of construction	24
196/120	Special means for heating	15
196/121	Electric	19
196/115	Special shapes	22
196/105	Systems	7
196/106	Series stills	11
196/107	Tube and drum	6
196/108	Cyclic circulation	1
196/109	Drum above tube	0
196/110	Tubular	32
196/114	Vacuum	35
196/136	Vapor outlets	12
196/111	With partitions	42