40 Inventive Principles 1.Segmentation 2. Taking out (Extraction) 3.Local quality or conditions 4. Asymmetry 5. Combining or merging 6.Universality 7.Nesting 8.Counterweight 9.Preliminary counter-action 10.Preliminary action 11.Cushion in advance 12.Equipotentiality 13.Inversion or 'the other way round' 14.Spheroidality-Curvature 15.Dynamics 16.Partial or excessive actions 17.Moving to another dimension 18.Mechanical vibration 19.Periodic action 20.Continuity of useful action 21.Rushing through or skipping 22."Blessing in disguise"or "Turn Lemons into Lemonade" 23.Feedback 24.Mediator or intermediary 25.Self-service 26.Copying 27.Cheap short-lived object instead of expensive durable one 28.Replace mechanical system 29.Pneumatics or hydraulics 30.Flexible shells or thin films 31.Porous materials 32.Change the color 33.Homogeneity 34.Rejecting and regenerating parts 35.Transformation of physical or chemical states of an object 36.Phase transitions 37.Thermal expansion 38.Strong oxidants 39.Inert atmosphere 40.Composite materials
40 Inventive Principles 1. Segmentation 2. Taking out (Extraction) 3. Local quality or conditions 4. Asymmetry 5. Combining or merging 6. Universality 7. Nesting 8. Counterweight 9. Preliminary counter-action 10. Preliminary action 11. Cushion in advance 12. Equipotentiality 13. Inversion or ‘the other way round' 14. Spheroidality - Curvature 15. Dynamics 16. Partial or excessive actions 17. Moving to another dimension 18. Mechanical vibration 19. Periodic action 20. Continuity of useful action 21. Rushing through or skipping 22. "Blessing in disguise" or "Turn Lemons into Lemonade" 23. Feedback 24. Mediator or intermediary 25. Self-service 26. Copying 27. Cheap short-lived object instead of expensive durable one 28. Replace mechanical system 29. Pneumatics or hydraulics 30. Flexible shells or thin films 31. Porous materials 32. Change the color 33. Homogeneity 34. Rejecting and regenerating parts 35. Transformation of physical or chemical states of an object 36. Phase transitions 37. Thermal expansion 38. Strong oxidants 39. Inert atmosphere 40. Composite materials
