Microscope objective
Patent 6181480 Issued on January 30, 2001. Estimated Expiration Date: 
July 28, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 28, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3746428 Objective lens system for microscope Patent #: 5121255 InventorAssigneeApplicationNo. 362379 filed on 07/28/1999US Classes:359/656, Microscope objective359/657, Having seven components359/658Having six componentsExaminersPrimary: Epps, GeorgiaAssistant: Thompson, Timothy Foreign Patent References
International ClassG02B 021/02Foreign Application Priority Data1998-07-29 JPAbstractA microscope objective that is achromatic, so that deviations in focus do not arise with visible light and ultraviolet light (particularly light in the vicinity of wavelength=266 nm), and which can satisfactorily observe a specimen. The microscope objective is made of at least three types of glass materials, of which one type is barium fluoride. | |
