The pair's investment has helped fuel cell maker Acal roughly double the money it has raised in its history.

France-based chemicals company Arkema has sold its stake in US-based medical technologies group Oxford Performance Materials (OPM).

PTT Chemical owns 47.9% of Myriant after it invested $60m in January.

Valero joins existing strategic investor Waste Management, a US-listed garbage collection company, and venture capital firms Rho Ventures, Braemar Energy Ventures and Cycle Capital, who have all invested in the latest equity round.

Alongside the Wright Brothers Institute and the US Air Force Research Laboratory, Innocentive will manage theOpen Innovation Pavilion.

In a regulatory filing first seen by CityBizList, Solicore has Andrew Teichman, executive director of investments at OPG Ventures, the corporate venturing unit of Canada-based Ontario Power Generation, and Robert Daigle, chief technology officer of local industrial group Rogers, as its directors.

Limburg backs Q Chip and ACS Biomarker.

Alongside DTE Energy Ventures in the consortium backing QD Vision's $22m round were In-Q-Tel, which invests on behalf of the US intelligence services, and venture capital firms.

3M New Ventures has invested in GoNano Technologies, a developer and manufacturer of nanomaterials for pollution control and sensory technologies, and Ecovative Design, which uses mushrooms for packaging.

William Watkins, chief executive of Bridgelux, told news provider VentureWire: "We are very close. We're signing papers" with an undisclosed strategic investor with two new financial backers.