US Patent Class 522
SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES-- Main Headings




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Current as of: June, 1999
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CLASS NOTES
*  DF  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
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CROSS-REFERENCE ART COLLECTIONS
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901  DF  DARK STORAGE STABILIZER
902  DF  AIR INHIBITION
903  DF  REMOVAL OF RESIDUAL MONOMER
904  DF  MONOMER OR POLYMER CONTAINS INITIATING GROUP {1}
906  DF  PREPARING SHRINKABLE MATERIAL
907  DF  INVOLVING PRECURSOR OF AN ULTRAVIOLET ABSORBER, E.G., MONOBENZOATE, ETC.
908  DF  DENTAL UTILITY
909  DF  SOLVENTLESS INK
910  DF  TREATMENT THROUGH AN EXTERNAL FILTER OR MASK (NONPHOTOGRAGHIC PROCESS)
911  DF  SPECIFIED TREATMENT INVOLVING MEGARAD OR LESS {1}
913  DF  NUMERICALLY SPECIFIED DISTINCT WAVELENGTH {1}
915  DF  INVOLVING INERT GAS, STEAM, NITROGEN GAS, OR CARBON DIOXIDE