US PATENT SUBCLASS 428 / 426
.~ Of quartz or glass

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

411.1  DF  COMPOSITE (NONSTRUCTURAL LAMINATE) {25}
426.~ Of quartz or glass {9}
427  DF  .~.~> Next to a boron containing layer
428  DF  .~.~> Next to another silicon containing layer {1}
430  DF  .~.~> Next to polyester (e.g., alkyd) {1}
432  DF  .~.~> Next to metal or compound thereof {1}
435  DF  .~.~> Next to polyamide or polyimide
436  DF  .~.~> Next to aldehyde or ketone condensation product {1}
438  DF  .~.~> Next to cellulosic {1}
440  DF  .~.~> Next to natural rubber, gum, oil, rosin, wax, bituminous or tarry residue
441  DF  .~.~> Next to addition polymer from unsaturated monomers {1}

DEFINITION

Classification: 428/426

(under subclass 411.1) Product in which at least one layer contains fused silica (i.e., quartz), or a mixture of (1) fused silica, and (2) alkali and alkaline silicates, commonly known as glass.

(1) Note. The glass may be in the form of fibers or as a fiber glass mat.

(2) Note. Such materials as waterglass, isinglass and plexiglass are not considered as glass.

(3) Note. Vitreous enamel or vitreous ceramic, per se, is considered to be glass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38, for stained glass elements in an aperture or frame. 49, for a unilayer of plural glass sections extending in both lateral and longitudinal directions.

174+, for corrugated fiber glass web or sheet.

312, 317, 325, 392, 406+, 415, and 417, as appropriately entitled, for other products containing glass, in the form of particles, a layer, foam, or fibers.

SEE OR SEARCH CLASS

65, Glass Manufacturing, appropriate subclasses, for glass making.

403, Joints and Connections, appropriate subclasses, for a connection or seal between two members at substantially a single locus where the structure or shape (e.g., ring, flange, angular relationship, etc.) of at least one of the members is specifically recited, and one of the members is glass or quartz.

442, Fabric (Woven, Knitted, or Nonwoven Textile or Cloth, etc.), appropriate subclasses for a glass fiber fabric in a laminate and

180, for a coated or impregnated glass fiber fabric.

501, Compositions: Ceramic,

11+, for glass compositions capable of forming lamina.