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Class Information
Number: 203
Name: Distillation: processes, separatory >
Description: GENERAL STATEMENT OF CLASS SUBJECT MATTER


Class Number Class Name No. of Patents
203/DIG.22

Accessories

36
203/DIG.21

Acrylic acid or ester

107
203/DIG.3

Acrylonitrile

22
203/50

Adding material to distilland except water or steam per se

63
203/51

At least two materials

165
203/52

Mixtures of hydrocarbons

33
203/56

One additive an alcohol or ether

118
203/53

One material is water

39
203/54

A second material is aldehyde or ketone

11
203/55

A second material is an alcohol

14
203/57

Organic compound

244
203/61

Acid

92
203/63

Alcohol or ether

255
203/65

Hydroxy aromatic (e.g., phenol)

112
203/66

Methanol

43
203/64

Polyhydroxy alcohol or ether derivative thereof

206
203/62

Aldehyde or ketone

205
203/59

Amine

107
203/60

Ester

322
203/67

Halogenated hydrocarbon

161
203/58

Heterocyclic

224
203/68

Hydrocarbon

112
203/70

Acyclic

151
203/69

Aromatic

140
203/6

Addition of material to distilland to inhibit or prevent reaction or to stabilize

105
203/8

For inhibiting or preventing a polymerization reaction

118
203/9

Of unsaturated hydrocarbon

110
203/7

For scale inhibiting or corrosion preventing

129
203/21

And recovering heat by indirect heat exchange

31
203/22

Utilizing recovered heat for heating feed

161
203/24

Compressed vapor as heat source

74
203/23

Distillation residue as heat source

73
203/25

Utilizing recovered heat for heating the distillation zone

114
203/26

Compressed vapor as heat source

165
203/27

Utilizing recovered heat in subsequent step in process

100
203/98

And returning product of distillation step to distillation zone

287
203/DIG.11

Batch distillation

47
203/DIG.16

Combination

109
203/DIG.18

Control

142
203/49

Convective distillation with normally gaseous medium, e.g., air

292
203/86

Distillation in apparatus or element of specific material

154
203/12

Distilling to separate or remove only water

89
203/13

From nitric acid

15
203/14

From organic compound

216
203/18

Alcohol

123
203/19

Ethanol

118
203/17

Aldehyde or ketone

28
203/15

Organic acid

55
203/16

Acetic

38
203/DIG.14

Ejector-eductor

76
203/89

Filming of distilland for vaporization

145
203/88

Flash vaporization of distilland

193
203/DIG.4

Heat pump

76
203/DIG.5

Human waste

13
203/95

Including addition of water or steam

93
203/97

And returning product of distillation step to distillation zone

58
203/96

To distillation column

147
203/20

Including defoaming or inhibiting foam

37
203/4

Including purging of the system

66
203/DIG.2

Laboratory distillation

58
203/DIG.23

Methanol

39
203/99

Miscellaneous separatory

212
203/DIG.24

Mobile, marine distiller

13
203/DIG.25

Non-distilling bottoms treatment

101
203/100

Particular type of heating

266
203/71

Plural distillations performed on same material

176
203/84

And returning distillation product to a previous distillation zone

112
203/81

Distillation of initial distillate

104
203/82

And returning distillation product to a previous distillation zone

87
203/83

Including the addition of water or steam

31
203/85

Including the addition of water or steam

46
203/73

One a distillation under positive pressure or vacuum

154
203/78

And returning distillation product to a previous distillation zone

217
203/74

Distillation of initial distillate

113
203/75

And return of distillation product to a previous distillation zone

130
203/76

Including the addition of water or steam

39
203/77

Initial distillation under positive pressure or vacuum

144
203/79

Including the addition of water or steam

77
203/80

Initial distillation under positive pressure or vacuum

261
203/72

One a filming distillation

86
203/DIG.9

Plural feed

143
203/DIG.20

Power plant

74
203/DIG.6

Reactor-distillation

260
203/DIG.17

Saline water conversion

103
203/5

Separating isotopes or tautomers

12
203/DIG.19

Sidestream

238
203/DIG.1

Solar still

154
203/DIG.13

Spirits

96
203/90

Spraying of distilland into vaporization zone

96
203/DIG.7

Start up or shut down

25
203/91

Vaporization zone under positive pressure or vacuum

346
203/94

And returning product of distillation step to distillation zone

114
203/92

Including the addition of water or steam

102
203/93

And returning product of distillation step to distillation zone

52
203/DIG.10

Vinyl acetate

13
203/DIG.8

Waste heat

154
203/10

Water purification only

366
203/11

Under pressure or vacuum

224
203/28

With chemical reaction

70
203/29

Including step of adding catalyst or reacting material

178
203/34

Acid

65
203/35

Phosphoric or sulfuric acid

65
203/36

Alkaline oxide or hydroxide

60
203/37

Alkali metal hydroxide

110
203/30

For polymerizing unwanted component

6
203/33

Inorganic salt containing oxygen in the anion

59
203/38

Organic material

160
203/31

Oxidizing material

34
203/32

Reducing material

30
203/39

With disparate physical separation

157
203/40

Of entrained particles from a vapor or gas

116
203/42

Utilizing liquid sorption of component from gas or vapor

91
203/43

Utilizing liquid-liquid extracting of distillation product

102
203/44

Of distillate

26
203/46

And distilling extractant phase

50
203/45

And distilling raffinate phase

29
203/47

Utilizing removing solid from liquid

77
203/48

By crystallizing

74
203/41

Utilizing solid sorbent

107
203/87

With fractional condensation of vapor outside still

141
203/1

With measuring, testing or inspecting

296
203/3

Of concentration

130
203/2

Of temperature or pressure

307
 
 
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