Company Filing History:

9 out of 1,252

Konishiroku Photo Industry Co., Ltd.

Years Active: 1979-1995

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5449592 - Silver halide color photographic light sensitive material for color (1995-09-12),

2. 5013633 - Method for developing a silver halide color photographic light-sensitive (1991-05-07),

3. 4994345 - Image forming method for forming a multicolor image from a half-tone dot (1991-02-19),

4. 4990438 - Direct positive light-sensitive silver halide photographic material (1991-02-05),

5. 4943518 - Direct-positive silver halide photographic light-sensitive material and (1990-07-24),

6. 4925780 - Direct positive silver halide light-sensitive color photographic material (1990-05-15),

7. 4917991 - Direct positive silver halide photographic material (1990-04-17),

8. 4910130 - Direct positive light-sensitive silver halide photographic material (1990-03-20),

9. 4868102 - Direct positive silver halide light-sensitive photographic material (1989-09-19),

10. 4863838 - Direct positive type light-sensitive silver halide photographic materials (1989-09-05),

11. 4840879 - Direct positive image-forming process (1989-06-20),

12. 4749644 - Photographic material with two size population of silver halide grains (1988-06-07),

13. 4440851 - Method for the formation of a direct positive image (1984-04-03),

14. 4433049 - Method for preparing a light-sensitive cuprous halide emulsion (1984-02-21),

15. 4279987 - Light-sensitive, direct positive silver halide photographic material (1981-07-21),

Title: **Keiji Ogi: Innovator in Photographic Technology**

Introduction

Keiji Ogi, a prominent inventor based in Hino, Japan, has made significant contributions to the field of photography through his innovative inventions. With a total of 17 patents to his name, Ogi has dedicated his career to advancing photographic materials and techniques.

Latest Patents

Keiji Ogi's latest inventions include groundbreaking patents focusing on silver halide color photographic light-sensitive materials. One of these inventions is a silver halide color photographic light-sensitive material for making color proofs, which allows for obtaining halftone color proofs that accurately reflect color tones in small and large dots. This innovative material consists of various layers, including yellow, magenta, and cyan image-forming layers that differ in spectral sensitivity. The method to prepare the color proof involves sequential exposure of the silver halide materials to light with varying spectral distributions, followed by development using a color developer.

Another notable patent involves a method for developing silver halide color photographic light-sensitive materials using a black-and-white halftone dot image. Here, the light-sensitive material features photographic component layers, including silver halide emulsion layers with unique spectral sensitivities, enhancing the accuracy of color reproduction in photographic proofs.

Career Highlights

Throughout his career, Keiji Ogi has worked with esteemed companies in the photographic industry, notably Konishiroku Photo Industry Co., Ltd. and Konica Corporation. His contributions to these organizations have had a lasting impact on the evolution of photographic technology.

Collaborations

Ogi has collaborated with talented peers like Yasuo Tosaka and Tomomi Yoshizawa, sharing insights and expertise that have further propelled innovations in photographic materials. Together, they have contributed to the success of various projects aimed at enhancing the quality and precision of color reproduction in photography.

Conclusion

Keiji Ogi's dedication to innovation in photographic technology has led to significant advancements that continue to influence the industry. With his impressive portfolio of patents and collaborations, he remains a pivotal figure in the evolution of photographic materials, inspiring future generations of inventors.

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.