BE724978A - - Google Patents
Info
- Publication number
- BE724978A BE724978A BE724978DA BE724978A BE 724978 A BE724978 A BE 724978A BE 724978D A BE724978D A BE 724978DA BE 724978 A BE724978 A BE 724978A
- Authority
- BE
- Belgium
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
- B41M5/132—Chemical colour-forming components; Additives or binders therefor
- B41M5/136—Organic colour formers, e.g. leuco dyes
- B41M5/15—Spiro-pyrans
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Paints Or Removers (AREA)
- Color Printing (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681761678 DE1761678A1 (en) | 1968-06-22 | 1968-06-22 | Writing set made of color icon papers |
| NL6910550A NL6910550A (en) | 1968-06-22 | 1969-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE724978A true BE724978A (en) | 1969-06-05 |
Family
ID=25755281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE724978D BE724978A (en) | 1968-06-22 | 1968-12-05 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE724978A (en) |
| CH (1) | CH490972A (en) |
| DE (1) | DE1761678A1 (en) |
| FR (1) | FR1593459A (en) |
| GB (1) | GB1210996A (en) |
| LU (1) | LU57270A1 (en) |
| NL (1) | NL6910550A (en) |
-
1968
- 1968-06-22 DE DE19681761678 patent/DE1761678A1/en active Pending
- 1968-11-07 LU LU57270D patent/LU57270A1/xx unknown
- 1968-11-27 FR FR1593459D patent/FR1593459A/fr not_active Expired
- 1968-12-05 BE BE724978D patent/BE724978A/xx unknown
-
1969
- 1969-06-06 GB GB2873869A patent/GB1210996A/en not_active Expired
- 1969-06-09 CH CH870769A patent/CH490972A/en not_active IP Right Cessation
- 1969-07-09 NL NL6910550A patent/NL6910550A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1210996A (en) | 1970-11-04 |
| FR1593459A (en) | 1970-05-25 |
| CH490972A (en) | 1970-05-31 |
| NL6910550A (en) | 1971-01-12 |
| DE1761678A1 (en) | 1971-08-05 |
| LU57270A1 (en) | 1970-05-13 |