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Class Information
Number: 521/179
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Cellular products or processes of preparing a cellular product, e.g., foams, pores, channels, etc. > Cellular product derived from a reactant containing two or more three membered heterocyclic rings wherein two of the ring members are carbon atoms and the remaining ring member is a chalcogen atom > With -c(=x)-x containing reactant wherein x is a chalcogen atom
Description: Subject matter wherein the said three-membered heterocyclic material is reacted with a X containing reactant and wherein X is a chalcogen atom.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6642284 |
Flame-retardant coating |
Nov. 4, 2003 |
| 6251961 |
Flame-retartant coating |
Jun. 26, 2001 |
| 6075064 |
Rigid hydrophobic polyurethanes |
Jun. 13, 2000 |
| 5900320 |
Foamed plastic and method of manufacturing the same |
May. 4, 1999 |
| 5759692 |
Phosphorous-modified coating compositions, a process for their preparation, and their use as an intumescent coating |
Jun. 2, 1998 |
| 5759691 |
Phosphorus-modified coating compositions, a process for their preparation, and their use |
Jun. 2, 1998 |
| 5514726 |
Polymer foams with inherent nonflammability and thermal stability and methods of preparation thereof |
May. 7, 1996 |
| 5405887 |
Porous film |
Apr. 11, 1995 |
| 4686244 |
Intumescent foamable compositions |
Aug. 11, 1987 |
| 4294785 |
Process of casting polyparabanic acid films from stabilized organic amide solvents |
Oct. 13, 1981 |
| 4272467 |
Method for producing an essentially gas and liquid impermeable low density, closed-cell, microcellular polyparabanic acid article |
Jun. 9, 1981 |
| 4198488 |
Polymer-polyols and polyurethanes based thereon |
Apr. 15, 1980 |
| 4194035 |
Modified polyisocyanates containing sulfonic acid ester groups |
Mar. 18, 1980 |
| 4192938 |
Modified polyisocyanates containing sulfonic acid ester groups |
Mar. 11, 1980 |
| 4090986 |
Thermoset epoxy foam compositions and a method of preparing the same |
May. 23, 1978 |
| 4086195 |
Bitumen filled polyester foams |
Apr. 25, 1978 |
| 4076626 |
High strength cast modules for supporting reverse osmosis membranes |
Feb. 28, 1978 |
| 4000096 |
Measuring and mixing process for the manufacture of foamed resins and installation and conglomerates obtained by using them |
Dec. 28, 1976 |
| 3940349 |
Compositions and process for making rigid plastic foams of modified vinyl ester resins and silicone compounds |
Feb. 24, 1976 |
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