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Official data from INPI

COMPOSIÇÃO LIGANTE RESINOSA TERMOCURÁVEL E PROCESSO DE FORMAÇÃO DE PELÍCULA SOBRE UMA SUPERFÍCIE ELETRICAMENTE CONDUTORA

ConcedidaInvention Patent

Application data

Number

PI7905293

Type

Invention Patent

Filing

08/17/1979

Publication

-

Progress at the INPI

  1. Filing08/17/79
  2. Publication
  3. Examination10/20/81
  4. Allowance05/09/89
  5. Grant10/24/89
  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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PPG Industries, Inc.

US

See this company's full portfolio

Inventors

J. B. (pessoa física)

US

R. C. (pessoa física)

US

S. B. (pessoa física)

Technical data

IPC Classification

Priority claims

US

937.386 · 08/28/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/09/1989

RPI 968

Exigência - art. 36 da LPI

#6.1

09/22/1987

RPI 883

Conhecimento de parecer técnico

#7.1

01/24/1984

RPI 692

Solicitação de exame técnico

#4.1

10/20/1981

RPI 574

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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