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| Number | Title | Issue Date |
| 4074055 | Process for preparing unsaturated imidazolines Compounds having the formula ##STR1## wherein R1 is hydrogen or methyl and R2 , R3 and R4 are, individually, hydrogen, alkyl (C1 -C4), aryl (C6 -C10), aralkyl (C | 02/14/1978 |
| 4062798 | Phenylpyrimidine derivatives Compounds of the formula ##STR1## wherein when X is nitrogen, Y and Z are --CH--; or when Y is nitrogen, X and Z are --CH--; or when Z is nitrogen, X and Y are --CH--; and one of R1 and R2 is cyano and the other is straight-chai... | 12/13/1977 |
| 4059548 | Hexahydropyrimidine-1,3-diacetonitriles and processes for preparing the same N,N'-Dicarboxymethyl-1,3-propanediamine (designated PDDA) is prepared by reacting 1,3-propanediamine with formaldehyde and HCN to form hexahydropyrimidine-1,3-diacetonitrile, which is hydrolyzed with an aqueous alkali metal hydroxide to form dialkali meta... | 11/22/1977 |
| 4058528 | 5-Hydroxyhexahydropyrimidine N,N'-Dicarboxymethyl-1,3-propanediamine (designated PDDA) is prepared by reacting 1,3-propanediamine with formaldehyde and HCN to form hexahydropyrimidine-1,3-diacetonitrile, which is hydrolyzed with an aqueous alkali metal hydroxide to form dialkali meta... | 11/15/1977 |
| 4053473 | Pharmacologically active thiourea and urea compounds The compounds are substituted thioalkyl-, aminoalkyl- and oxyalkyl-thioureas and ureas which are inhibitors of histamine activity.... | 10/11/1977 |
| 4039541 | Monocyclic aromatic clathrates of 13-oxatetracyclo[8.2.12,9.0.03,8 ]tridec-5-ene-1,5,6,10-tetracarbonitrile 13-Oxatetracyclo[8.2.12,9.0.03,8 ]tridec-5-ene-1,5,6,10-tetracarbonitrile; clathrates thereof with monocyclic unsubstituted aromatic compounds; and methods of separating organic admixtures.... | 08/02/1977 |
| 4039542 | Unsaturated pyrimidine Compounds having the formula ##STR1## wherein m is 0 or 1, X is an anion, R1 is hydrogen, methyl or phenyl and R2, R3 and R4 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, are disclosed.... | 08/02/1977 |
| 4038331 | Catalytic process for preparation of perfluoroalkyl substituted aromatic compounds Perfluoroalkyl substituted aromatic or heteroaromatic compounds are prepared by reacting a perfluoroalkyl bromide with an aromatic compound in the vapor phase in the presence of a catalytic amount of iodine or an iodine generating compound.... | 07/26/1977 |
| 4014880 | Process for making imidazolines and tetrahydropyrimidines from oxazolines and alkylenediamines The reaction of 2-oxazolines with 1,2- or 1,3-alkylenediamines to form 2-imidazolines or 1,4,5,6-tetrahydropyrimidines is catalyzed by Lewis acids.... | 03/29/1977 |
| 4006247 | Unsaturated imidazolines Compounds having the formula ##STR1## wherein n and m are, individually, 0 or 1, X is an anion, R' is hydrogen, methyl or phenyl and R2, R3 and R4 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, polymers... | 02/01/1977 |
| 4003718 | Substituted tetrahydropyrimidines Substituted tetrahydropyrimidines, both mono- and disubstituted, as exemplified by 2(2-N,N-dioctylamino-2-propyl)-3-tetradecyl-1,4,5,6-tetrahydropyrimidine, are useful as additives in petroleum distillates such as gasoline.... | 01/18/1977 |
| 4001232 | Process for preparing 1-substituted 2-methyl-tetrahydropyrimidines 1-SUBSTITUTED 2-METHYL-TETRAHYDROPYRIMIDINES ARE PREPARED BY REACTING AN N-substituted propylene diamine with an acetoacetic acid ester or amine at a temperature of from 0° to 80° C and removing the water produced in the reaction at a temperature of fro... | 01/04/1977 |
| 3997536 | Phenyl-pyrimidines Phenyl-pyrimidines of the formula ##STR1## wherein R1 and R2 are as hereinafter set forth, are described. The end products are useful as liquid crystals.... | 12/14/1976 |
| 3988367 | Preparation of N,N'-dicarboxymethyl-1,3-propanediamines N,N'-Dicarboxymethyl-1,3-propanediamine (designated PDDA) is prepared by reacting 1,3-propanediamine with formaldehyde and HCN to form hexahydropyrimidine-1,3-diacetonitrile, which is hydrolyzed with an aqueous alkali metal hydroxide to form dialkali meta... | 10/26/1976 |
| 3972890 | Process for preparing a 2(ω-aminoalkyl)-1,3-heterocyclic compounds 2-(ω-AMINOALKYL)-1,3-HETEROCYCLIC COMPOUNDS ARE PREPARED BY REACTING A COMPOUND SELECTED FROM THE GROUP OF A DIAMINE, AN AMINOHYDROXY AND AN AMINOTHIOL COMPOUND, SAID COMPOUND HAVING THE FORMULA: ##EQU1## wherein ##EQU2## A is a bivalent c... | 08/03/1976 |
| 3969355 | 5-Aminoethyl-2,4-diphenylpyrimidine dihydrobromide Certain 5-substituted-2,4-diphenylpyrimidines of the formula: ##SPC1## Wherein R is acetyl, 1-hydroxy-1-ethyl, 1-amino-1-ethyl, 1-hydroxy-2-isopropylamino-1-ethyl, 5,6-dihydroimidazo [2,1-b] thiazol-3-yl, 2-amino-1-hydroxy-1-ethyl, and 1-hydroxy-2-ph... | 07/13/1976 |
| 3950333 | Pharmacologically active guanidine compounds The compounds are substituted thioalkyl-, aminoalkyl- and oxyalkyl-guanidines which are inhibitors of histamine activity.... | 04/13/1976 |
| 3944581 | 5-Substituted-2,4-diphenylpyrimidines Certain 5-substituted-2,4-diphenylpyrimidines of the formula: ##SPC1## Wherein R is acetyl, 1-hydroxy-1-ethyl, 1-amino-1-ethyl, 1-hydroxy-2-isopropylamino-1-ethyl, 5,6-dihydroimidazo[2,1-b]thiazol-3-yl, 2-amino-1-hydroxy-1-ethyl, and 1-hydroxy-2-phthalimi... | 03/16/1976 |
| 3943134 | Process for preparing acetonin 2,2,4,4,6-Pentamethyl-2,3,4,5-tetrahydropyrimidine, called acetonin, is prepared by reacting acetone with ammonia in the presence of an ammonium halide catalyst and in the presence of from 0.01 to 0.5 mole % (based on acetone) of a promoter selected from ... | 03/09/1976 |
