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Official data from INPI

PREPOLIMERO CURAVEL DE POLIURETANA E PROCESSO DE LIGACAO DE DUAS OU MAIS SUPERFICIES

Em AnáliseInvention Patent

Application data

Number

PI7804199

Type

Invention Patent

Filing

07/01/1977

Publication

-

Progress at the INPI

  1. Filing07/01/77
  2. Publication
  3. Examination
  4. Allowance09/20/83
  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: 08/15/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT

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Inventors

B. J. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

08/15/1989

RPI 982

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

01/03/1984

RPI 689

Deferimento

#9.1

09/20/1983

RPI 674

Exigência - art. 36 da LPI

#6.1

01/18/1983

RPI 639

6.2

11/10/1981

RPI 577

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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