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TRIZ 40 Principles

Creative tools > TRIZ Contradiction Analysis > TRIZ 40 Principles

These are the 40 inventive principles that have been used in hundreds of thousands of patents. You can use them via TRIZ Contradiction Analysis or standalone, as stimuli to prod your thinking forward.

 1. Segmentation

 2. Extraction

 3. Local Quality

 4. Asymmetry

 5. Combination

 6. Universality

 7. Nesting

 8. Counterweight

 9. Prior Counteraction

10. Prior Action

11. Cushion in Advance

12. Equipotentiality

13. Inversion

14. Spheroidality

15. Dynamicity

16. Partial, overdone or excessive action

17. Moving to a new dimension

18. Mechanical vibration

19. Periodic action

20. Continuity of useful action

21. Rushing through

22. Convert harm into benefit

23. Feedback

24. Mediator

25. Self-service

26. Copying

27. Inexpensive short life

28. Replacement of a mechanical system

29. Use pneumatic or hydraulic systems

30. Flexible film or thin membranes

31. Use of porous materials

32. Changing the colour

33. Homogeneity

34. Rejecting and regenerating parts

35. Transforming physical or chemical states

36. Phase transition

37. Thermal expansion

38. Use strong oxidisers

39. Inert environment

40. Composite materials