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Hiroshi Iijima

USPTO Granted Patents = 18

EPO Patents = 2

Average Co-Inventor Count = 1.7

ph-index = 8

Forward Citations = 133(Granted Patents)

Company Filing History:

13 out of 1,033

Kabushiki Kaisha Topcon

Nippon Electric Co., Ltd.

2 out of 35,734

Nec Corporation

Mitsubishi Oil Co., Ltd.

Years Active: 1978-2002

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18 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6481848 - Ophthalmologic apparatus (2002-11-19),

2. 6132046 - Ophthalmologic apparatus (2000-10-17),

3. 6053867 - Noncontact tonometer for measuring intraocular pressure (2000-04-25),

4. 5989195 - Noncontact tonometer (1999-11-23),

5. 5975701 - Ophthalmologic apparatus (1999-11-02),

6. 5975698 - Ophthalmic instrument (1999-11-02),

7. 5910833 - Ophthalmic instrument (1999-06-08),

8. 5708494 - Ophthalmological instrument (1998-01-13),

9. 5682224 - Ophthalmological instrument with improved alignment mechanism (1997-10-28),

10. 5614966 - Ophthalmologic instrument (1997-03-25),

11. 5465123 - Noncontact type tonometer (1995-11-07),

12. 5436679 - Apparatus for observing and photographing a corneal endothelium (1995-07-25),

13. 5033841 - Ophthalmological instrument (1991-07-23),

14. 4868438 - Three-phase induction motor (1989-09-19),

15. 4755702 - Three-phase induction motor (1988-07-05),

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