Personal life

He was born in Strinda

Strinda

Strinda is a former municipality in Sør-Trøndelag county, Norway. The area encompassed the eastern part of the present-day municipality of Trondheim south and east of the main city center all the way southeast to the lake Jonsvatnet.-History:...

 as a the oldest of seven sons of businessman Lauritz Jenssen

Lauritz Jenssen

Lauritz Jenssen was a Norwegian businessperson and politician. A part of a notable business family based in and around Trondhjem, Jenssen founded Ranheims Papirfabrik, and also served one term in the Parliament of Norway....

 (1837–1899) and Jørgine Wilhelmine Darre (1842–1910). He was a brother of Hans Jørgen Darre-Jenssen

Hans Jørgen Darre-Jenssen

Hans Jørgen Darre-Jenssen was a Norwegian engineer and politician for the Liberal Left Party. He was the Minister of Labour from 1910 to 1912, and thereafter served as director of the Norwegian State Railways.-Personal life:...

 and Worm Hirsch Darre-Jenssen

Worm Hirsch Darre-Jenssen

Worm Hirsch Darre-Jenssen was a Norwegian engineer and politician for the Conservative Party. He served two terms in the Parliament of Norway, and was the Minister of Labour from 1926 to 1928.-Career:...

, and a nephew of Hans Jørgen Darre

Hans Jørgen Darre

Hans Jørgen Darre was a Norwegian bishop.The son of the vicar in Klæbo and constitutional founding father, Jacob Hersleb Darre, he graduated as cand.theol. in 1827 and succeeded his father as vicar in Klæbu in 1833. He was the dean in Dalerne from 1843 to 1848, and in March 1849 he took over as...

. He took the name Dorenfeldt in 1890.

In October 1890 he married physician's daughter Aagot Bødtker (1869–1963). They had the son Lauritz Jenssen Dorenfeldt

Lauritz Jenssen Dorenfeldt (jurist)

-Personal life:He was born in Kristiania as a son of engineer Lauritz Jenssen Dorenfeldt and Aagot Bødtker . He was a grandson of Lauritz Jenssen, grandnephew of Hans Jørgen Darre and a nephew of Hans Jørgen Darre-Jenssen and Worm Hirsch Darre-Jenssen...

, who made his career in law. Through his wife he was also a brother-in-law of Sigurd Bødtker

Sigurd Bødtker

-Personal life:He was born in Trondhjem as a son of physician Fredrik Waldemar Bødtker and Sophie Jenssen . He was the brother of chemist Eyvind Bødtker, a second cousin of military officer Carl Fredrik Johannes Bødtker, log driving manager Ragnvald Bødtker and County Governor Eivind Bødtker, and...

.

Career

He took the examen artium

Examen artium

Examen artium was the name of the academic certification conferred in Denmark and Norway, qualifying the student for admission to university studies. Examen artium was originally introduced as the entrance exam of the University of Copenhagen in 1630...

 at Trondhjem Cathedral School in 1881, and graduated from Trondhjem's technical school in 1884. He was hired in his father's factory Ranheim Cellulosefabrik in 1884, was promoted to assistant engineer in 1885 and manager in 1888. By that time he had undertaken studies at the Royal Technical College of Charlottenburg. In 1891 the factory became the paper factory Ranheim Papirfabrikk

Ranheim Papirfabrikk

Ranheim Papirfabrikk AS was a Norwegian industrial company, which ran a paper factory with the same name at Ranheim, Trondheim, Norway.The construction of it started in 1882, and it was opened as Ranheims Cellulosefabrik in 1884 by businessperson and politician Lauritz Jenssen, a son of Lauritz...

. In 1894 he was hired as a technical director for a similar factory in Rheindürkheim, Rhineland Palatinate, and in 1902 he settled in Kristiania

Oslo

Oslo is a municipality, as well as the capital and most populous city in Norway. As a municipality , it was established on 1 January 1838. Founded around 1048 by King Harald III of Norway, the city was largely destroyed by fire in 1624. The city was moved under the reign of Denmark–Norway's King...

 to work with technical consulting.

He was prominent in the development of pulp and paper industry

Pulp and paper industry

The global pulp and paper industry is dominated by North American , northern European and East Asian countries...

. In the technical sphere, he was a proponent for using pyrite

Pyrite

The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS2. This mineral's metallic luster and pale-to-normal, brass-yellow hue have earned it the nickname fool's gold because of its resemblance to gold...

 from Norway as well as natrium sulphite in the production of cellulose

Cellulose

Cellulose is an organic compound with the formula , a polysaccharide consisting of a linear chain of several hundred to over ten thousand β linked D-glucose units....

. He took part in a development of the Norwegian industry from exporting cellulose and pulp

Pulp (paper)

Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibres from wood, fibre crops or waste paper. Wood pulp is the most common raw material in papermaking.-History:...

, to refining and exporting paper. He co-founded a research institute in 1922 and the association Norsk Celluloseforening. He died in January 1932 in Oslo.