Reexamination Certificates file layout
The first field is the character representing the certificate type followed by seven or more positions representing the "Patent Number".
The second field is eight positions and contains the "Publication Date" in a YYYYMMDD format.
The third field is two positions and contains the patent "Kind of Document Code".
Example:
| Document Number | Publication Date | Kind of Document Code |
|---|---|---|
| B5093617 | 20001219 | B1 |
| B4490209 | 20001219 | B2 |
| C5775534 | 20010102 | C1 |
| CD350855 | 20020108 | C1 |
| CRE33507 | 20020528 | F1 |
| C4940488 | 20020618 | C2 |
| BRE33209 | 19960116 | F2 |