IP Library › Granted Patent US 4,444,871
Granted Patent Utility
US 4,444,871 · App. 06/429,157

Method for forming a direct positive color image

Inventors: Kazuyoshi Miyaoka, Shigeharu Koboshi
Patented Case View Patent ↗
Granted: Apr 24, 1984 Filed: Sep 30, 1982
Inventors
Kazuyoshi Miyaoka
Shigeharu Koboshi
Assignee (at issue)
Konishiroku Photo Industry Co., Ltd.

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,444,871
App. No.
06/429,157
Filed
1982-09-30
Granted
1984-04-24
Kind
A