Patents
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Patents for 1980 (299)
12/1980
12/30/1980US4242730 Single scan microprocessor-controlled densitometer
12/30/1980CA1092516A1 Filter system for swimming pool cleaning machines
12/30/1980CA1092503A1 Roller blind bar
12/30/1980CA1092316A1 Fiber-orientated composites
12/30/1980CA1092309A1 Removable inner core for tires
12/30/1980CA1092303A1 Flexible vascular graft of polymeric material with internal porous surface
12/24/1980WO1980002837A1 Process for removing amino-acids from keratine
12/23/1980US4240873 Solenoidal fusion system
12/23/1980CA1092142A2 4-hydroxyphenylalkanolamine derivatives and preparation thereof
12/23/1980CA1092138A1 Preparation of organic sulfone compounds
12/23/1980CA1092003A1 Self-contained, combined irrigator and evacuator for wounds
12/23/1980CA1092001A2 Modular tubular solar energy collector apparatus
12/23/1980CA1092000A2 Modular tubular solar energy collector apparatus
12/23/1980CA1091901A1 Chemical resistant process equipment and method of producing process equipment
12/16/1980US4239625 Potting pleated membrane
12/16/1980CA1091799A1 Electronic switch for use in television
12/16/1980CA1091782A2 Dc-free encoding for data transmission system
12/16/1980CA1091689A2 Pyrrolidine, piperidine and azepidine prostaglandin analogues
12/16/1980CA1091688A2 Pyrrolidine and piperidine prostaglandin analogues
12/16/1980CA1091682A1 Method of preparing isocyanates
12/16/1980CA1091569A1 Positive lockable reversible seat
12/09/1980US4238307 Electrodialysis process for the separation of essential amino acids from derivatives thereof
12/09/1980US4238306 Electrodialysis process for the separation of non-essential amino acids from derivatives thereof
12/09/1980CA1091246A2 Preparation of 4-hydroxyphenylaminoalkyl ketone derivatives
12/09/1980CA1091102A1 Mass wave soldering system
12/09/1980CA1090978A2 Ceiling support grid system
12/09/1980CA1090972A1 Process for tubular water-bath thermoplastic films
12/02/1980CA1090924A2 Memory arrangement for use in a digital data processing system
12/02/1980CA1090923A2 Memory arrangement for use in a digital data processing system
12/02/1980CA1090921A2 Timing error compensator
12/02/1980CA1090899A2 Decoding apparatus and method for d.c. free data transmission system
12/02/1980CA1090513A1 Cleaning apparatus for submerged surfaces
11/1980
11/26/1980EP0019071A1 Earth collector for heat pumps and process for the operation of this earth collector
11/25/1980US4235814 Hydrohalogenation of n-tert-alkyl-n-1-alkenylcarbamyl halide with hydrogen halide
11/25/1980US4235808 Purification of unsaturated dinitriles by contacting with chi-alumina prior to hydrogenation
11/25/1980US4235789 Bromination of 1-aminoanthraquinone to 1-amino-2,4-dibomoanthraquinone, hydroxylation
11/25/1980CA1090223A1 Solar collector having selective film of improved stability to liquid water condensate
11/25/1980CA1090079A1 Thermoplastic resin-coated metallic substrate and the method of producing the same
11/25/1980CA1090076A1 Method and apparatus for injection foam molding
11/25/1980CA1090069A1 Pile product and method of making the same
11/18/1980US4234743 Epoxy resin curing agents
11/18/1980US4234514 Method of preparing ketoxime carbamates
11/18/1980US4234508 Process for preparing cyanohydrin esters
11/18/1980US4234507 From acyl halides, alkali cyanide and borohydride
11/18/1980US4234506 Process for preparing cyanohydrin esters
11/18/1980US4234505 From acyl cyanide and anhydride
11/18/1980CA1090019A1 Method and apparatus for detecting the presence of a speech signal on a voice channel signal
11/18/1980CA1089612A1 Method for moulding thermoplastics objects
11/18/1980CA1089611A2 Fabrication of soft contact lens and composition therefor
11/11/1980US4233459 Treated with reducing agents in two steps during or after preparation from alkali metal phthalamate or phthalimidate and an alkali metal hypohalite
11/11/1980US4233242 Process for producing ketazine by reacting a ketone with ammonia and a peroxide
11/11/1980CA1089483A1 Process for the production of monoisocyanate
11/11/1980CA1089437A1 Peat sampling probe
11/11/1980CA1089408A2 Apparatus for machining electrically conducting substances by electrochemical attack
11/11/1980CA1089308A1 Solar heat collector
11/11/1980CA1089278A1 Photographic emulsions containing agi crystals with crystals converted from agcl to agbr forming epitaxial junctions therewith
11/04/1980US4231956 Process for preparation of thioethers
11/04/1980CA1088956A1 N-(2-mercaptoethyl)alkanamides from h 1n2 xxs and 2-h- 2-oxazolines or 2-alkyl-2-oxazolines
11/04/1980CA1088955A2 Omega-amino alkenoic acids
11/04/1980CA1088953A2 O-nitrophenyl-thionocarbamoyl-carbabinates
11/04/1980CA1088712A1 Multilevel embossing of a foam sheet
10/1980
10/29/1980EP0018177A1 Process for producing alpha-halogeno-beta-alanines or the mineral acid salts thereof
10/29/1980EP0017924A2 Process for preparing azoxybenzene by catalytical hydrogenation of nitrobenzene with molecular hydrogen
10/29/1980EP0017896A1 1-Nitro-2-amino-3 oximino-1-cyclohexenes and process for their preparation
10/28/1980US4230883 Preparation of hydroxyphenylalanine hydrohalide salts
10/28/1980US4230637 Process for the preparation of chlorine-substituted aromatic amines
10/28/1980CA1088658A1 Stripe lasers
10/28/1980CA1088562A2 Acetylene derivatives of amino acids
10/28/1980CA1088484A1 Dual reel hub
10/28/1980CA1088481A1 Lampholder seal and method of making the same
10/28/1980CA1088356A1 Hammer type ignition system
10/28/1980CA1088271A1 Connector
10/21/1980US4229588 Preparation of dialkyl dithiodialkanoates
10/21/1980CA1088099A2 Process for the preparation of novel alcoxy anilids and derivatives thereof
10/21/1980CA1088098A1 Isobutyramides and preparation thereof
10/21/1980CA1087827A1 Preparation of molecularly oriented containers using reheat process
10/21/1980CA1087822A1 Closure system for injection or transfer moulding press
10/21/1980CA1087821A1 Injection of plastic in molding machine
10/14/1980US4228303 3-(3,4-Dihydroxyphenyl)-N-(4-nitrobenzyl)alanine hydrobromide
10/14/1980CA1087632A2 3-[n'-(3-halopropyl)-n'-methylamino]-n,n,n- trimethyl-1-propanaminium halide and novel polymers
10/07/1980CA1087106A1 Hemodialysis apparatus
10/07/1980CA1086999A1 Dental saliva ejector
10/07/1980CA1086916A1 Acrylic adhesive for bonding vinyl coatings
10/01/1980EP0016446A1 Process for the preparation of O,N-disubstituted hydroxyl amines
09/1980
09/30/1980US4225511 Direct oximation of ketones using gallia catalysts
09/30/1980CA1086835A2 Regenerator for an optical transmission system
09/30/1980CA1086801A1 Vehicle protection device
09/30/1980CA1086784A1 Method of mining bedded mineral deposits with hydraulic extraction
09/30/1980CA1086719A1 Stabilized diazotized sulfanilic acid solutions
09/30/1980CA1086718A2 Process for preparing 6-triphenylmethylamino-2,2- dimethyl-3-(acetoxy or hydroxy) peram
09/30/1980CA1086698A1 Reusable safety warning device
09/30/1980CA1086579A1 No-gel latex foam
09/23/1980US4224246 Forming the acetate salts, separating the isomers by fractional crystallization
09/23/1980US4224030 Durable press finishing treatment for cellulose textiles employing an aluminum acetate catalyst solution
09/23/1980CA1086343A2 Strip accumulator
09/23/1980CA1086140A1 Wheelchair retaining clamp for buses
09/16/1980CA1085934A2 Regenerator for an optical transmission system
09/16/1980CA1085567A1 Port protective ring in a male mold
09/09/1980USPP4591 Pear tree
09/09/1980US4221920 Aromatic salicylate process
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