Archived challenges

These are the challenges that have expired or been solved.

6 000.00 USD

Coffee Extraction Process Adapted to Industrial Volume

Submission deadline: Jun 10, 2012

20 000.00 USD

Embedding a mixture of ion-exchange resins (IER) within a polymer matrix

Submission deadline: Nov 16, 2011

20 000.00 USD

New incentives to reduce energy consumption

Submission deadline: Aug 30, 2011

10 000.00 USD

Transparent material with variable refractive index

Submission deadline: Apr 24, 2011

15 000.00 USD

Reliable estimation of electrical power consumption

Submission deadline: Mar 16, 2011

6 000.00 USD

Seeking a non-metallic pliable material for food package closure

Submission deadline: Mar 1, 2011

20 000.00 USD

Miracle Cure for Coal

Submission deadline: Feb 8, 2011

15 000.00 USD

Alternatives to triglycerides to structure oil in food emulsions

Submission deadline: Feb 2, 2011

150 000.00 USD

Kaolin extraction and processing

Submission deadline: Dec 6, 2010

7 500.00 USD

Improve the next generation of a business-class seat for planes

Submission deadline: Nov 30, 2010

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