1
Bignardi Luigi: Device for measuring the opacity of smokes. SNAM PROGETTI, Watson Esq Ralph M, June 11, 1974: US3816004 (87 worldwide citation)

An improved device for measuring the opacity of gases has been disclosed which utilizes a photoelectric optical system and an orthogonally positioned Venturi tube to monitor the opacity of gases.


2
Bellussi Giuseppe, Perego Giovanni, Clerici Mario Gabriele, Giusti Aldo: Synthetic, crystalline, porous material containing oxides of silicon and boron.. Eniricerche, Enichem Sintesi, Snam Progetti, November 30, 1988: EP0293032-A2 (76 worldwide citation)

A synthetic, crystalline, porous material containing oxides of silicon and boron is disclosed, which, in the non-calcined state, has the following empyrical formula: mM2/nO,pR,xM2O3,(1-x)B2O3,yMO2,qH2O and, in the calcined and anhydrous state, has the following empyrical formula: mM2/nO,xM2O3,(1-x)B ...


3
Crystalline silica. Snam Progetti, January 16, 1980: GB2024790-A (68 worldwide citation)

Nouveau matériau synthétique à base de silice.


4
Baldieri Francesco, Borgianni Carlo: Process for the treatment of amorphous carbon or graphite manufactured articles, for the purpose of improving their resistance to oxidation, solutions suitable for attaining such purpose and resulting product. Snam Progetti, April 29, 1975: US3881039 (61 worldwide citation)

A process is disclosed for improving the oxidative resistance of amorphous carbon or graphite articles. The process comprises applying a solution of water; an oxide or hydroxide of a group 2 metal; a member of the group consisting of nitric acid; sodium nitrite and sodium carbonate; and boric acid o ...


5
Taramasso Marco, Perego Giovanni, Notari Bruno: Matiere synthetique cristalline poreuse constituee par des oxydes de silicium et de titane, son procede de preparation et ses applications. Snam Progetti, June 26, 1981: FR2471950-A1 (37 worldwide citation)

LA MATIERE DECRITE DANS LE PRESENT BREVET CORRESPOND A LA FORMULE: XTIO(1-X) SIODANS LAQUELLE X SE SITUE ENTRE 0,0005 ET 0,04, DE PREFERENCE ENTRE 0,01 ET 0,025, DESIGNEE PAR LE NOM "SILICALITE DE TITANE", EST PREPAREE EN PARTANT D'UN MELANGE D'UNE SOURCE D'OXYDE DE SILICIUM ET D'UNE SOURCE D'OXYDE ...


6
Cavani Fabrizio, Arrigoni Virginio, Ghezzi Roberto, Bellussi Giuseppe: Process for alkylating aromatic compounds.. Eniricerche, Enichem Sintesi, Snam Progetti, June 19, 1991: EP0432814-A1 (36 worldwide citation)

An alkylating process is disclosed, according to which aromatic and alkylaromatic compounds, phenol and phenol derivatives are alkylated with olefins containing from 2 to 4 carbon atoms. The process is carried out in the presence of Beta zeolite as the catalyst. Beta zeolite is used as such, or modi ...


7
Perrotti Emilio, Cipriani Gioacchino: Process for the preparation of esters of carbonic acid. Snam Progetti, Watson Esq Ralph M, November 5, 1974: US3846468 (36 worldwide citation)

A process is described whereby carbonic acid esters, i.e., alkyl, aryl and cycloalkyl carbonates, are prepared by reacting an alcohol with oxygen and carbon monoxide in the presence of a catalyst selected from copper complexed with an organic molecule.


8
Ciuti Brunello, Del Ross Sergio: Compositions useful for eliminating water surface pollution caused by organic substances. Snam Progetti, July 11, 1972: US3676357 (31 worldwide citation)

Composition useful in eliminating surface water pollution caused by crude petroleum oil or its fractions consisting of:1. a carrier having a specific gravity sufficiently low that it floats (e.g. sawdust, silicates, diatomite, vegetable oil residues, vegetable flour, animal flour, silica gel, charco ...


9
Brunello Ciuti, Ferdinando Angelini, Ernesto Brandolese: Method for the preparation in a continuous way of water/oil emulsions and apparatus suitable therefor. Snam Progetti S p A, Ralph M Watson, May 31, 1977: US04026817 (30 worldwide citation)

An oil in water emulsion is prepared as a continuous process by causing a stream of water to flow through a duct containing a Venturi providing a converging frustum of a cone zone, a diverging frustum of a cone zone and a central zone joining the two frustum of a cone zones, so that the stream flows ...


10
Ancillotti Francesco, Pescarollo Ermanno: Production of t-butyl alkyl ethers. Snam Progetti, September 28, 1983: GB2116546-A (28 worldwide citation)

In producing t-butyl alkyl ethers by etherifying with aliphatic alcohols isobutene in a hydrocarbon feedstock containing butadiene in addition to the isobutene, the increase in the pressure drop in the etherification reactor(s) that is due to the butadiene is eliminated by feeding the reactants from ...