Archived challenges

These are the challenges that have expired or been solved.

5 000.00 EUR

Techniques and Methodologies That Could be Used to Reduce Vegetable Enzyme Activity

Submission deadline: Apr 3, 2013

25 000.00 USD

On-line locating of underground medium-voltage cable joints - Part 2

Submission deadline: Feb 1, 2013

4 300.00 USD

Search for software that could be used to enable remote control or assistance between mobile devices

Submission deadline: Oct 12, 2012

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

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