6.if company , its employees, agents,or subcontractors make improvements, modification or derivative works (improvements) of any caterpillar property, company will promptly notify caterpillar.additionally, company hereby grants caterpillar a non-exclusive,royalty free, non-terminable worldwide license under such improvements,and sell products and processes embodying such improvements. company will not disclose to caterpillar any confidential or proprietary information unless caterpillar first agrees in a writing signed by an authorized representative of caterpillar specifically referencing this agreement