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Class Information
Number: 987/33
Name: Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system > Phosphorus compounds (9/02; 9/06) > Compound contains a ring which is devoid of a metal atom and contains at least one p atom as ring member (9/6564; 9/6564v; 9/6568; 9/6568b; 9/6568c; 9/6568d; 9/6568e; 9/6568f)
Description: Subject matter wherein a phosphorus atom is part of a ring.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4968416 |
1,4-disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides and their use in froth flotation |
Nov. 6, 1990 |
| 4912262 |
Chemical process |
Mar. 27, 1990 |
| 4855507 |
1,4-Disubstituted-2,3,5,6-tetrahydroxy-1,4-diphosphorinanes and their oxides or sulfides |
Aug. 8, 1989 |
| 4665196 |
Preparation of substituted cyclic and heterocyclic methane sulfonates |
May. 12, 1987 |
| 4609708 |
Method for manufacture of polymeric pyrrolidinium methanesulfonate viscosifiers |
Sep. 2, 1986 |
| 4545911 |
Polymeric pyrrolidinium methanesulfonate viscosifiers for aqueous fluids |
Oct. 8, 1985 |
| 4528383 |
Substituted cyclic and heterocyclic methane sulfonates |
Jul. 9, 1985 |
| 4504622 |
Polymeric pyrrolidinium methanesulfonate viscosifiers and method for manufacture |
Mar. 12, 1985 |
| 4487702 |
Substituted heterocyclic methane sulfonates as sacrificial agents in enhanced oil recovery |
Dec. 11, 1984 |
| 4469607 |
Pyrrolidinium methane sulfonates as surfactants in enhanced oil recovery |
Sep. 4, 1984 |
| 4397790 |
Isophosphinolinone derivatives |
Aug. 9, 1983 |
| 4329303 |
Process for the preparation of 1-oxo-phospholane-chloro-hydrins |
May. 11, 1982 |
| 4147710 |
Compounds containing phosphorous and a method for making polycarbodiimide foams with the compounds as a catalyst |
Apr. 3, 1979 |
| 4102949 |
Production of 3,4-dihydroxy phospholane oxides |
Jul. 25, 1978 |
| 3975465 |
Heterocyclic phosphorus compounds |
Aug. 17, 1976 |
| 3931059 |
Process for preparing polycarbodiimide foams in the presence of phosphetane oxide or sulfide adducts |
Jan. 6, 1976 |
| 3931196 |
Phosphinolines and phosphindolines |
Jan. 6, 1976 |
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