Question: ANCAP is a state-owned company involved in the production of a basic ingredient of concrete which was patented in what year?
Context: The State Palaces, Castles and Gardens of Saxony (German: "Staatliche Schlösser, Burgen und Gärten Sachsen" ) is a state-owned company with its head office in Dresden.  It belongs to the Saxon State Ministry of Finance and has the aim of preserving Saxon cultural heritage whilst respecting cultural and conservation needs.  The state-owned company manages several palaces, castles and parks in the Saxony.  These include the Zwinger in Dresden, the Albrechtsburg in Meissen and Kriebstein Castle. Padlamanggan (from "padlas" (crazy) and "mangga" (mango) from the Philippine language Waray-Waray) is a usually colorless spirit from the Philippines which has an alcohol content that varies from 35 to 70% by volume.  Padlamanggan is mostly drunk purely; sometimes the liquor is used as the basic ingredient for cocktails. In mathematics, the Maurer–Cartan form for a Lie group "G" is a distinguished differential one-form on "G" that carries the basic infinitesimal information about the structure of "G" .  It was much used by Élie Cartan as a basic ingredient of his method of moving frames, and bears his name together with that of Ludwig Maurer. The Comisión Federal de Electricidad (English: Federal Electricity Commission ) is the state-owned electric utility of Mexico, widely known as CFE.  It is the country's dominant electric company, and the country's second most powerful state-owned company after Pemex.  The Mexican constitution states that the government is responsible for the control and development of the national electric industry, and CFE carries out this mission.  The company's slogan is "Una empresa de clase mundial" ("A World-Class Company"). China Hi-Tech Group Corporation Ltd. (CHTC) is a Chinese company .  The company was owned by the Chinese Central Government via State-owned Assets Supervision and Administration Commission of the State Council.  The company involved in textile industry. Drekkana (Sanskrit: द्रेष्काण or द्रेक्काण ) is one of the sixteen main "vargas" (divisions of a sign) described by Parasara to Maitreya who wanted to be explained about the different kinds of houses (Brihat Parasara Hora Sastra (Sl.  VI.1).  Parasara states that relationship with co-borns is to be judged from the "drekkanas" occupied by planets.  All standard ancient texts on Hindu astrology describe these "vargas".  The actual disposition of a planet is properly known from its occupation of these sixteen "vargas".  These sixteen sub-divisional charts which are one of the four dimensions of astrology are a basic ingredient of Hindu astrology, and each sub-divisional chart is firstly required to be studied independently and then collectively as one.  M. Ramakrishna Bhat is of the opinion that "Drekkana" is not a Sanskrit word but borrowed from the Greek. Funšterc (egg omelette) is Slovenian national dish also known as "knapovsko sonce" (coalminer's sun) or "knapovska torta" (coalminer's cake) or "šmorn".  It is a traditional dish from Zasavje region.  In the past it was especially popular among coal miners and their families due to its basic ingredient - egg.  Egg belonged to non-standard dishes because of low living standard of the population.  The omelette must have been thick and round, but also tender and puffy.  It was yellow like the sun, which the coal miners couldn't see while working underground.  They took funšterc into coal pits and ate it at break, but only at special days. Vinacafe (or Vinacafé Bien Hoa JSC) is a Vietnamese company involved in the production, processing and distribution of coffee and instant cereal mix.  It is an affiliate of the Vietnam National Coffee Corporation (abbreviated "Vinacafe"), a Hanoi-based, state-owned corporation under the Ministry of Agriculture and the Food Industry, which deals in the production, processing, export, and import of coffee.  Established in 1969 at the Coronel Coffee Plant in Biên Hòa, Đồng Nai Province, Republic of Vietnam by French engineer Marcel Coronel, the company was confiscated by the state when Coronel and his family fled Vietnam at the close of the Vietnam War.  The plant successfully processed its first batches of instant coffee in 1977.  The Vinacafé brand was established in 1983, and the company became a joint stock company in December 2004.  Its coffee products have been awarded the title of "Highest Quality Vietnamese Product" since 1995.  The company's director is Mr.Phạm Quang Vũ. ANCAP (Administración Nacional de Combustibles, Alcoholes y Portland) is a state-owned company in Uruguay.  It is involved in the production of petroleum products, Portland cement and alcoholic beverages.  It operates Uruguay's single oil refinery at La Teja with a capacity of 50000 oilbbl per day.  ANCAP has a long-term corporate credit rating 'BB-' with positive outlook by Standard & Poor's. Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout.  It was developed from other types of hydraulic lime in England in the mid 19th century, and usually originates from limestone.  It is a fine powder, produced by heating limestone and clay minerals in a kiln to form clinker, grinding the clinker, and adding small amounts of other materials.  Several types of Portland cement are available.  The most common, called ordinary Portland cement (OPC), is grey in colour, but white Portland cement is also available.  Its name is derived from its similarity to Portland stone which was quarried on the Isle of Portland in Dorset, England.  It was named by Joseph Aspdin who obtained a patent for it in 1824.  However his son William Aspdin is regarded as the inventor of "modern" Portland cement due to his developments in the 1840s.
Answer: 1824