Patents by Inventor Aziz El Sayed
Aziz El Sayed has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11028603Abstract: A scaffold having an opposing pair of half funicular trusses that are detachably or pivotably connected in the middle to establish a funicular arched truss is provided, where when in a detached or pivoted state, storage and transporting a plurality of the half funicular trusses is simplified.Type: GrantFiled: May 30, 2018Date of Patent: June 8, 2021Assignee: The American University in CairoInventors: Ahmed Yehia Abdel Aziz El-Sayed, Mohamed Darwish, Khaled Nassar
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Publication number: 20200181928Abstract: A scaffold having an opposing pair of half funicular trusses that are detachably or pivotably connected in the middle to establish a funicular arched truss is provided, where when in a detached or pivoted state, storage and transporting a plurality of the half funicular trusses is simplified.Type: ApplicationFiled: May 30, 2018Publication date: June 11, 2020Inventors: Ahmed Yehia Abdel Aziz El-Sayed, Mohamed Darwish, Khaled Nassar
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Patent number: 6737462Abstract: The invention relates to thermally stable, weather-resistant polyamide moulding compositions containing as stabiliser, a mixture of a copper halide, one or more halogen compounds and hypophosphorous acid or an alkali metal or alkaline earth metal salt of this acid, wherein the individual components of the stabiliser mixture are added in an amount such that the molar amount of halogen contained in the moulding composition is greater than or equal to six times the molar amount of and less than or equal to fifteen times the molar amount of copper contained in the moulding composition and the molar amount of phosphorus is greater than or equal to the molar amount of and less than or equal to ten times the molar amount of copper contained in the moulding composition.Type: GrantFiled: November 20, 2001Date of Patent: May 18, 2004Assignee: Bayer AGInventors: Andreas Gittinger, Aziz El-Sayed, Edgar Ostlinning, Ralf Lange
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Publication number: 20020077403Abstract: The invention relates to thermally stable, weather-resistant polyamide moulding compositions containing, as stabiliser, a mixture of a copper halide, one or more halogen compounds and hypophosphorous acid or an alkali metal or alkaline earth metal salt of this acid, wherein the individual components of the stabiliser mixture are added in an amount such that the molar amount of halogen contained in the moulding composition is greater than or equal to six times the molar amount of and less than or equal to fifteen times the molar amount of copper contained in the moulding composition and the molar amount of phosphorus is greater than or equal to the molar amount of and less than or equal to ten times the molar amount of copper contained in the moulding composition.Type: ApplicationFiled: November 20, 2001Publication date: June 20, 2002Applicant: Bayer AGInventors: Andreas Gittinger, Aziz-El Sayed, Edgar Ostlinning, Ralf Lange
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Patent number: 6207072Abstract: A coolant containing 35-65 wt. % polyethylene glycol and 65-35 wt. % ethylene glycol, which is especially useful for cooling motor vehicle engines.Type: GrantFiled: April 3, 1998Date of Patent: March 27, 2001Assignee: Bayer AGInventors: Aziz El Sayed, Detlev Joachimi, Hartwig Meier, Karsten-Josef Idel
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Patent number: 6071984Abstract: This invention relates to reinforced thermoplastic moulding compositions prepared from biodegradable polymers, for example aliphatic or polyester amides, aliphatic polyester urethanes, and to the use thereof for the production of mouldings and to the mouldings, wherein the reinforcing materials are selected from wood flour, fibres of natural origin, minerals of natural origin, cellulose and cellulose derivatives.Type: GrantFiled: June 25, 1998Date of Patent: June 6, 2000Assignee: Bayer AktiengesellschaftInventors: Ernst Grigat, Hanns Peter Muller, Wolfgang Schulz-Schlitte, Aziz El Sayed, Ralf Timmermann
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Patent number: 5965652Abstract: The invention relates to thermally stable and UV-stable polyamide molding compounds containing colloidal copper formed in situ and to a process for their production.Type: GrantFiled: February 10, 1994Date of Patent: October 12, 1999Assignee: Bayer AGInventors: Aziz El Sayed, Edgar Ostlinning, Alban Hennen, Georg Heger, Werner Nielinger, Karsten-Josef Idel, Klaus Sommer, Raymond Audenaert
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Patent number: 5827905Abstract: This invention relates to reinforced thermoplastic moulding compositions prepared from biodegradable polymers, for example aliphatic or polyester amides, aliphatic polyester urethanes, and to the use thereof for the production of mouldings and to the mouldings, wherein the reinforcing materials are selected from wood flour, fibres of natural origin, minerals of natural origin, cellulose and cellulose derivatives.Type: GrantFiled: September 18, 1996Date of Patent: October 27, 1998Assignee: Bayer AktiengesellschaftInventors: Ernst Grigat, Hanns Peter Muller, Wolfgang Schulz-Schlitte, Aziz El Sayed, Ralf Timmermann
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Patent number: 5717018Abstract: A thermoplastic molding composition, containingA) 99.95 to 30 parts by weight of thermoplastic polymer,B) 0 to 3 parts by weight of copper pyrophosphate hydrate,C) 0 to 3 parts by weight of copper(II) hydroxide phosphate,D) 0 to 3 parts by weight of manganese sulphate hydrate,E) 0 to 50 parts by weight of fillers and reinforcing materials,F) 0 to 60 parts by weight of flame retardant additives,G) 0 to 30 parts by weight of elastomeric modifiers,H) 0 to 8 parts by weight of antimony trioxide,wherein at least one of the components B) or D) is contained in the mixture.Type: GrantFiled: September 12, 1996Date of Patent: February 10, 1998Assignee: Bayer AGInventors: Herbert Magerstedt, Aziz El-Sayed, Frank Gerling
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Patent number: 5576377Abstract: The present invention relates to colored polymer moulding materials which give rise to colored markings on a dark background with a very high contrast ratio on the absorption of laser energy.Type: GrantFiled: March 20, 1995Date of Patent: November 19, 1996Assignee: Bayer AGInventors: Aziz El Sayed, Frank Gerling, Salvatore Messina, Herbert Magerstedt, Karsten-Josef Idel, Edgar Ostlinning
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Patent number: 5416143Abstract: The invention relates to readily processible polyamide molding compounds which have very good mechanical and electrical properties as well as high surface quality and are based on polyamide, magnesium hydroxide and polyhydroxy compounds of the Novolak type.Type: GrantFiled: December 27, 1993Date of Patent: May 16, 1995Assignee: Bayer AktiengesellschaftInventors: Aziz El Sayed, Edgar Ostlinning, Karsten-Josef Idel, Dieter Freitag
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Patent number: 5389712Abstract: The present invention relates to easily processable polyamide moulding materials with very good mechanical and electrical properties based on calcium magnesium carbonate hydrate as the flame-retardant additive.Type: GrantFiled: December 21, 1993Date of Patent: February 14, 1995Assignee: Bayer AGInventors: Aziz El Sayed, Edgar Ostlinning, Karsten-Josef Idel, Dieter Freitag, Georg Heger
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Patent number: 5378750Abstract: This invention relates to readily processable polyamide molding compounds combining very good mechanical and electrical properties with high surface quality based on copolyamides and magnesium hydroxide.Type: GrantFiled: December 27, 1993Date of Patent: January 3, 1995Assignee: Bayer AktiengesellschaftInventors: Aziz El Sayed, Edgar Ostlinning, Karsten-Josef Idel
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Patent number: 5242960Abstract: The invention relates to flameproofed non-drip polyamide molding compounds which contain certain quantities ofa) phosphinic acid esters of polyphenols still containing free phenolic OH groups,b) zinc borate and/or zinc oxide,c) thermoplastics having a predominantly aromatic main chain, optionallyd) antidripping agents (for example polyfluoroethylene polymers) and, optionally,reinforcing materials and/or mineral fillers and other additives for processing, stabilization, etc.Type: GrantFiled: January 13, 1992Date of Patent: September 7, 1993Assignee: Bayer AktiengesellschaftInventors: Edgar Ostlinning, Aziz El Sayed, Klaus Sommer, Hans G. Frohlen
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Patent number: 5201921Abstract: Process for rendering a plastic identifiable by adding 5 to 10,000 ppb of a fluorescent marker to the plastic during or after is manufacture.Type: GrantFiled: September 6, 1991Date of Patent: April 13, 1993Assignee: Bayer AktiengesellschaftInventors: Klaus Luttermann, Uwe Claussen, Aziz El Sayed, Reinhard Riess
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Patent number: 5128401Abstract: A polymeric molding compositon based on aliphatic polyamides contains as additives polyarylene sulfides and polyphenolic compounds free from tertiary alkyl group ortho to the phenolic-OH groups is useful in producing molded articles such as films, fibers and shaped objects.Type: GrantFiled: January 18, 1991Date of Patent: July 7, 1992Assignee: Bayer AktiengesellschaftInventors: Hans-Detlef Heinz, Aziz El-Sayed, Werner Kloker, Ralf Dujardin
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Patent number: 5102931Abstract: The subject of the invention is flameproofed, non-dripping polyamide moulding compounds which contain specific amounts of the following:A) Phosphinic acid esters of polyphenols based on phenolaldehyde/ketone condensates,B) Anti-dripping agents (such as polyfluoroethylene polymers or aramides),C) Zinc borate,D) Thermoplastics with a predominantly aromatic main chain and a high thermal deflection temperature (Vicat B.gtoreq.180.degree. C.),and, if applicable, reinforcing agents and other additives for flameproofing and processing.Type: GrantFiled: July 23, 1990Date of Patent: April 7, 1992Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Aziz El-Sayed, Peter-Rolf Muller, Martin Wandel
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Patent number: 5102935Abstract: The invention relates to new, free-flowing polyamide molding compounds and blends, characterized in that they are prepared by mixing of polyamides known per se in the melt with low molecular weight, liquid-crystalline esters and/or ester amides corresponding to formula (I) and/or liquid-crystalline, oligomeric esters and/or ester amides corresponding to formula (II) and, optionally, other additives, at least one polymeric blending component being used as a further additive in the case of polyamide blends, and to the use of these liquid-crystalline (LC) additives I and/or II as flow promoters in polyamide molding compounds and blends and to a process for the production of the new polyamide molding compounds and blends. The invention also relates to the new oligomeric esters and/or ester amides corresponding to formula (II).Type: GrantFiled: September 5, 1989Date of Patent: April 7, 1992Assignee: Bayer AktiengesellschaftInventors: Hans-Detlef Heinz, Harald Pielartzik, Aziz El-Sayed, Rolf-Volker Meyer, Martin Wandel, Peter-Roger Nyssen
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Patent number: 5093457Abstract: The invention relates to a process for the production of polyamide imides from diimidodicarboxylic acids, trimellitic imidocarboxylic acids and diisocyanates and to their use as moldings, films and binders for paints.Type: GrantFiled: August 21, 1989Date of Patent: March 3, 1992Assignee: Bayer AktiengesellschaftInventors: Wilfried Zecher, Rolf Dhein, Aziz El-Sayed, Wilfried Haese
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Patent number: 5021488Abstract: The invention relates to flameproofed, non-dripping polyamide moulding compositions which contain certain amounts ofA) phosphinic acid esters of polyphenols based on phenol-aldehyde/ketone condensates,B) antidripping agents (such as polyfluoroethylene polymers or aramides) andC) zinc borateand if appropriate reinforcing agents and other additives for flameproofing and for processing etc.Type: GrantFiled: July 23, 1990Date of Patent: June 4, 1991Assignee: Bayer AktiengesellschaftInventors: Karl Fuhr, Friedemann Muller, Karl-Heinz Ott, Aziz El-Sayed, Peter-Rolf Muller, Martin Wandel