Patent Explorer
Browse, filter, and analyze 47 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB2029308A | Photographic processing method and apparatus | Polaroid Corp | Expired / Lapsed | 1979-07-20 | — | 1999-07-20 | 0.0 yrs | 19 | |
| US4676583A | Adscititious resonator | Polaroid Corp | Expired / Lapsed | 1985-05-02 | 1987-06-30 | 2005-05-02 | 0.0 yrs | 15 | |
| US4554591A | Reproducible image and information bearing record | Polaroid Corp | Expired / Lapsed | 1983-09-19 | 1985-11-19 | 2003-09-19 | 0.0 yrs | 12 | |
| US3911494A | Interactive teaching system using two tapes in a single cassette | Polaroid Corp | Expired / Lapsed | 1974-02-11 | 1975-10-07 | 1994-02-11 | 0.0 yrs | 7 | |
| US3825335A | Variable color photographic lighting system | Polaroid Corp | Expired / Lapsed | 1973-01-04 | 1974-07-23 | 1993-01-04 | 0.0 yrs | 28 | |
| US3761179A | Mirror testing apparatus | Polaroid Corp | Expired / Lapsed | 1971-08-26 | 1973-09-25 | 1991-08-26 | 0.0 yrs | 18 | |
| US3651252A | Image reproduction system which detects subject by sensing intensity ratios | Polaroid Corp | Expired / Lapsed | 1970-01-22 | 1972-03-21 | 1990-01-22 | 0.0 yrs | 25 | |
| US3634682A | Laser interferometer-type servo-positioning system comprising velocity control network and phase-lock network | Polaroid Corp | Expired / Lapsed | 1970-02-13 | 1972-01-11 | 1990-02-13 | 0.0 yrs | 42 | |
| US3511659A | Novel detachable masks | Polaroid Corp | Expired / Lapsed | 1966-12-30 | 1970-05-12 | 1986-12-30 | 0.0 yrs | 0 | |
| US3464332A | Automatic exposure control system | Polaroid Corp | Expired / Lapsed | 1966-05-12 | 1969-09-02 | 1986-05-12 | 0.0 yrs | 0 | |
| US3382783A | Photographic exposure and processing apparatus | Polaroid Corp | Expired / Lapsed | 1966-04-25 | 1968-05-14 | 1986-04-25 | 0.0 yrs | 0 | |
| US3347981A | Method for transmitting digital data in connection with document reproduction system | Polaroid Corp | Expired / Lapsed | 1964-03-18 | 1967-10-17 | 1984-03-18 | 0.0 yrs | 2 | |
| US3296594A | Optical associative memory | Polaroid Corp | Expired / Lapsed | 1963-06-14 | 1967-01-03 | 1983-06-14 | 0.0 yrs | 2 | |
| US3205795A | Automatic exposure control device | Polaroid Corp | Expired / Lapsed | 1961-11-06 | 1965-09-14 | 1981-11-06 | 0.0 yrs | 2 | |
| US3056492A | Fluid containers | Polaroid Corp | Expired / Lapsed | 1960-10-03 | 1962-10-02 | 1980-10-03 | 0.0 yrs | 1 | |
| US2854697A | Method of stretching plastic sheet material | Polaroid Corp | Expired / Lapsed | 1954-12-14 | 1958-10-07 | 1974-12-14 | 0.0 yrs | 0 | |
| US2788707A | Projection system for stereoscopic images | Polaroid Corp | Expired / Lapsed | 1954-02-19 | 1957-04-16 | 1974-02-19 | 0.0 yrs | 0 | |
| US2600962A | Tunable narrow band optical filter | Polaroid Corp | Expired / Lapsed | 1948-10-09 | 1952-06-17 | 1968-10-09 | 0.0 yrs | 0 | |
| US2590186A | Method of forming films | Polaroid Corp | Expired / Lapsed | 1948-04-24 | 1952-03-25 | 1968-04-24 | 0.0 yrs | 0 | |
| US2554850A | Heat resistant light-polarizing polyvinyl borate film containing borax | Polaroid Corp | Expired / Lapsed | 1948-06-18 | 1951-05-29 | 1968-06-18 | 0.0 yrs | 2 |
Showing 1 to 20 of 47 patents
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