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Official data from INPI

COMPOSICAO PARA USO EM REPARO DE MATERIAIS DE REVESTIMENTO ELASTOMERICOS DE CABO,COMPOSTO DE POLIURETANA E PROCESSO PARA REPARO DOS DITOS MATERIAIS DE REVESTIMENTO

ConcedidaInvention Patent

Application data

Number

PI7902020

Type

Invention Patent

Filing

04/03/1978

Publication

-

Progress at the INPI

  1. Filing04/03/78
  2. Publication
  3. Examination12/15/81
  4. Allowance07/14/87
  5. Grant12/29/87
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

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Inventors

B. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Conhecimento de parecer técnico

#7.1

10/11/1983

RPI 677

6.2

06/22/1982

RPI 609

Solicitação de exame técnico

#4.1

12/15/1981

RPI 582

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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