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Legal status
Patent lapsed (non-payment of fees)
| (51) | INT.CL.: (2006.01) |
C08G 69/00 |
| (11) | Number of the document | 3237 |
| (13) | Kind of document | B |
| (21) | Application number | IP358 |
| (22) | Date of filing the application | 1993-02-25 |
| (41) | Date of publication of the application | 1994-09-25 |
| (45) | Date of publication of patent | 1995-04-25 |
| (30) | Number | Date | Country code |
| 227035 | 1988-08-01 | US | |
| 4894658 | 1991-01-31 | SU |
| (71) |
E.I. Du Pont de Nemours and Company,
1007 Market Street, Wilmington, Delaware 19898,
US
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| (72) |
Robert Clayton WHELAND, US
Ivan Keith MILLER, US |
| (73) |
E.I. Du Pont de Nemours and Company,
1007 Market Street, Wilmington, Delaware 19898,
US
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| (74) |
Liudmila GERASIMOVIČ,
IĮ "Liudmila Gerasimovič, Patentinis patikėtinis", Vingrių g. 13-42, LT-01141 Vilnius,
LT
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| (54) | PROCESS FOR INCREASING THE MOLECULAR WEIGHT OF POLYAMIDES AND NYLON |
| Payment date | Validity (years) | Amount | |
| 1997-02-05 | 5 | 100.00 USD |
| Patent lapsed (non-payment of fees) | ||
| Invalidation date | 1998-02-25 |