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Official data from INPI

COMPOSICAO DE REVESTIMENTO RESINOSO CURAVEL E PROCESSO PARA REVESTIMENTO DE UMA SUPERFICIE ELETRICAMENTE CONDUTORA

ConcedidaInvention Patent

Application data

Number

PI7905141

Type

Invention Patent

Filing

08/28/1978

Publication

-

Progress at the INPI

  1. Filing08/28/78
  2. Publication
  3. Examination
  4. Allowance11/10/87
  5. Grant05/31/88
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PPG INDUSTRIES INC

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Inventors

B. S. (pessoa física)

C. L. (pessoa física)

C. R. (pessoa física)

J. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

11/10/1987

RPI 890

Exigência - art. 36 da LPI

#6.1

05/05/1987

RPI 863

Conhecimento de parecer técnico

#7.1

10/04/1983

RPI 676

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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