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Official data from INPI

SISTEMA CATALISADOR PARA POLIMERIZACAO DE OLEFINAS E PROCESSO DE PREPARACAO DO MESMO

ConcedidaInvention Patent

Application data

Number

PI7601513

Type

Invention Patent

Filing

03/14/1975

Publication

-

Progress at the INPI

  1. Filing03/14/75
  2. Publication
  3. Examination
  4. Allowance11/10/81
  5. Grant08/31/82
  6. Expired08/03/93

The letters patent expired on 08/03/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/31/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. C. (pessoa física)

Inventors

K. S. (pessoa física)

K. J. (pessoa física)

R. L. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/31/1982

RPI 619

Notificação para pagamento de retribuição

#13.1

03/02/1982

RPI 593

Deferimento

#9.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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