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Official data from INPI

PROCESSO PARA ELIMINAR OS POLIMEROS INFERIORES DOS GASES DE RECIRCULACAO QUE EFETUAM A POLIMERIZACAO OU COPOLIMERIZACAO DE ETILENO

ConcedidaInvention Patent

Application data

Number

PI7804512

Type

Invention Patent

Filing

07/13/1977

Publication

-

Progress at the INPI

  1. Filing07/13/77
  2. Publication
  3. Examination
  4. Allowance11/01/83
  5. Grant03/27/84
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. C. (pessoa física)

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Inventors

G. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

02/14/1984

RPI 695

Deferimento

#9.1

11/01/1983

RPI 680

Exigência - art. 36 da LPI

#6.1

11/16/1982

RPI 630

6.2

10/13/1981

RPI 573

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

Pedido de licença compulsória

#20.1

04/21/1992

RPI 1116

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