(under subclass 17.1) Processes directed to treating a glass preform, and see the Glossary for definitions of "glass treating" and "preform".
SEE OR SEARCH THIS CLASS, SUBCLASS:
22, for a combined process including pore forming in situ to form a cellular glass body.
30+, for a process of treating involving a chemical reaction; see the "Search Notes" thereunder.
33.1, for a process of devitrifying or vitrifying crystalline glass.
41, for a process of bonding glass to a formed part including annealing or tempering of the glass.
60.1+, for a combined process including coating glass and see the "Search Notes" thereunder. 61, for a combined process including grinding of the glass.
69, for a process of forming a hollow product in a mold cavity from molten glass including annealing or tempering of the product.
85, for a process of forming a glass product from molten glass including positive cooling of the product.
95+, for a process of forming a sheet from molten glass including annealing or tempering of the sheet.
104, for a process of reshaping or surface deforming a glass preform including annealing or tempering of the preform.
348+, for annealing or tempering apparatus.
SEE OR SEARCH CLASS
34, Drying and Gas or Vapor Contact With Solids, appropriate subclasses for a process or apparatus of general application for contacting solids with gas or vapor.
204, Chemistry: Electrical and Wave Energy, appropriate subclasses for applying electrical or wave energy to molten or preformed glass to bring about a chemical change (e.g., color change, etc.) of at least one constituent of the glass;
follow the general guidelines for placement of an operation involving the combination of at least one Class 204 step in sequence with a separate Class 65 step as explained at the beginning of the Class 204 definition under I, (4) and (5) Notes.
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,
687+, for electrolytic material treatment, especially subclass 769 for electrolytic treatment of solid glass, silica, quartz, or optical material. 250, Radiant Energy,
324, for methods and apparatus for corona irradiation of materials including glass, subclass 327.1 for methods and apparatus for irradiating detectors which may be of the glass type, subclass 472.1 for methods to detect radiation by non-electric detectors which include glass type.
373, Industrial Electric Heating Furnaces,
27+, for apparatus and processes directed to electric heating of glass. The line between Class 65 and 373 is stated in subclass 134 of Class 65.
432, Heating,
9+, for a process of general utility of applying heat to an article. Processes involving application of the heat to a glass substrate in a particular manner, e.g., nonuniformly, or to change a physical on chemical property of the glass are classified in Class 65.
