[[Image:PAssignee1.png|thumb|center|700 px|Assignee wise IP activity]]
Note: Below mentioned assignees patents added together and presented in above graph* SUMITOMO LIFE INSURANCE and MITSUI SUMITOMO INSURANCE is merged with presented as MITSUI SUMITOMO LIFE INSURANCE.* GE MORTGAGE HOLDINGS is merged with GE FINANCIAL ASSURANCE HOLDING.is presented as GE FINANCIAL ASSURANCE HOLDING
* NICHIDO FIRE & MARINE INSURANCE, TOKIO MARINE AND FIRE INSURANCE, TOKIO MARINE & NICHIDO LIFE INSURANCE and TOKIO MARINE & NICHIDO FIRE INSURANCE are merged with TOKIO MARINE & FIRE INSURANCE.
* NIPPONKOA INSURANCE and NIPPON ELECTRIC are merged with NIPPON LIFE INSURANCE.