Product Innovation

TRIZ 40 Principles

Creative Solving of Engineering Problems and Inventing New Products

By: Genrich Altshuller

Entrepreneurial Creativity (Ten3 Mini-course)

TRIZ ("The theory of inventor's problem solving")  was developed by a Soviet engineer and researcher Genrich Altshuller and his colleagues starting in 1946. It has been evolving ever since. Today, TRIZ is a methodology, tool set, knowledge base, and model-based technology for generating innovative ideas and solutions for problem solving. TRIZ provides tools and methods for use in problem formulation, system analysis, failure analysis, and patterns of system evolution. In contrast to random idea generation techniques such as brainstorming, TRIZ aims to create an algorithmic approach to the invention of new systems, and the refinement of old systems.



TRIZ Principles:     1 10     11 20     21 30     31 40





Divide an object into independent parts.

Make an object easy to disassemble.

Increase the degree of fragmentation or segmentation.


Taking out

Separate an interfering part or property from an object, or single out the only necessary part (or property) of an object.


Local quality

Change an object's structure from uniform to non-uniform, change an external environment (or external influence) from uniform to non-uniform.

Make each part of an object function in conditions most suitable for its operation.

Make each part of an object fulfill a different and useful function.



Change the shape of an object from symmetrical to asymmetrical.

If an object is asymmetrical, increase its degree of asymmetry.



Bring closer together (or merge) identical or similar objects, assemble identical or similar parts to perform parallel operations.

Make operations contiguous or parallel; bring them together in time.



Make a part or object perform multiple functions; eliminate the need for other parts.


Nested doll

Place one object inside another; place each object, in turn, inside the other.

Make one part pass through a cavity in the other.



To compensate for the weight of an object, merge it with other objects that provide lift.

To compensate for the weight of an object, make it interact with the environment.


Preliminary anti-action

If it will be necessary to do an action with both harmful and useful effects, this action should be replaced with anti-actions to control harmful effects.

Create beforehand stresses in an object that will oppose known undesirable working stresses later on.


Preliminary action

Perform, before it is needed, the required change of an object (either fully or partially).

Pre-arrange objects such that they can come into action from the most convenient place and without losing time for their delivery.



TRIZ Principles:     1 10     11 20     21 30     31 40


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