US PATENT SUBCLASS 445 / 9
.~ Generating gas or vapor within an envelope, or coating by vapor, gas, mist or smoke within the envelope

Current as of: June, 1999
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445 /   HD   ELECTRIC LAMP OR SPACE DISCHARGE COMPONENT OR DEVICE MANUFACTURING

1  DF  PROCESS {13}
9.~ Generating gas or vapor within an envelope, or coating by vapor, gas, mist or smoke within the envelope {12}
10  DF  .~.~> Controlled vaporizing or coating
11  DF  .~.~> Depositing plural coatings
12  DF  .~.~> With diverse type coating operation
13  DF  .~.~> With subsequent treatment of the coating
14  DF  .~.~> Coating on particular base material, part or place
15  DF  .~.~> Plural gas or vapor generating operations
16  DF  .~.~> With gas introduction
17  DF  .~.~> With precedent or subsequent heating of tube or electrode
18  DF  .~.~> Including establishing an electric space discharge
19  DF  .~.~> Electromagnetic induction heating
20  DF  .~.~> Filament heating
21  DF  .~.~> Generating gas or vapor from reactive compostion containing a reducing agent

DEFINITION

Classification: 445/9

Generating gas or vapor within an envelope, or coating by vapor, gas, mist or smoke within the envelope:

(under subclass 1) Method which includes (1) producing or creating a gaseous material or aerosol within the enclosure of the electric lamp or electric space discharge device by treating a normally nongaseous material within the enclosure, or (2) producing or creating a deposition layer on some part of the electric space discharge by the absorption or condensation of a gaseous material or aerosol, or by the reaction of a base or deposition ingredient with a gaseous material or aerosol.

(1) Note. Original placement within this subclass requires that the gaseous material or aerosol must be within the enclosure of the lamp or discharge device and deposition

operation must include some operation peculiar to the manufacture of electric lamps or electric space discharge devices so that the process is not of general utility.

(2) Note. Methods which include introducing a material which is in the gaseous or vapor state prior to its introduction in the envelope and which do not involve forming a coating from the gas or vapor material are excluded from these subclasses.

(3) Note. The coating applied to the part of the lamp or discharge device need not serve any useful function as a coating, but may be merely a procedure adapted to eliminate the vapor from the interior of the envelope of the lamp or discharge device, or the vaporizing and subsequent deposition may be for procuring the material in a vaporized state so that it will be an active getter.

SEE OR SEARCH THIS CLASS, SUBCLASS:

22, for other methods of coating a part of a lamp or discharge device combined with a Class 445 operation other than coating.

38+, for methods of assembly or disassembly including gas, vapor or liquid introduction. 53+, for methods including getter or fluent material introduction.

73, for corresponding apparatus.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, appropriate subclasses, for methods directed to the production of metals where a gas or vapor is generated containing the metal, the gas or vapor being treated so as to yield the metal.

148, Metal Treatment,

240+, for processes of reactively coating a metal substrate wherein an external agent combines with a component of the metal substrate to produce a coating on the metal substrate that contains a component of the metal substrate.

204, Chemistry: Electrical and Wave Energy,

192.1+, for coating, forming, or etching by sputtering. See the (3) Note in the Class 445 definition for an explanation of the general class line between Class 445 and other classes.

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, appropriate subclasses

for electrolytic processes. See the (3) Note in the Class 445 definition for an explanation of the general class line between Class 445 and other classes.

252, Compositions,

181.1+, for getter materials and gas or vapor generating materials for electric lamps and electric space discharge devices and the classes specified in the notes to the definitions of those subclasses. 313, Electric Lamp and Discharge Devices, appropriate subclasses, for lamp and discharge device structure whether prior to the use of the getter or vapor generating material (e.g., incompletely manufactured) or subsequent to the use of the material.

549+, provides for lamps and discharge devices provided with a getter or gas or vapor generating material.

417, Pumps,

48+, for electrical or getter type devices.

427, Coating Processes,

58+, for processes of coating, per se, to form an electrical product and note especially subclasses 77+ for processes wherein the coating is electron emissive or suppressive and applied by vapor deposition; and subclass 237, for coating the interior of a hollow article by vapor, gas, mist or smoke.