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Official data from INPI

MATERIAL COMPOSITO ESTRATIFICADO E PROCESSO DE UNIAO EM SUPERFICIE DE FOLHAS DO MESMO

Em AnáliseInvention Patent

Application data

Number

PI7903230

Type

Invention Patent

Filing

05/23/1978

Publication

-

Progress at the INPI

  1. Filing05/23/78
  2. Publication
  3. Examination02/24/82
  4. Allowance01/31/84
  5. Grant07/31/84
  6. Expired07/26/94

The letters patent expired on 07/26/1994: 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: 06/04/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TECHNIGAZ

Inventors

K. M. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

06/04/1985

RPI 763

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/15/1984

RPI 708

Deferimento

#9.1

01/31/1984

RPI 693

Exigência - art. 36 da LPI

#6.1

07/26/1983

RPI 666

6.2

08/10/1982

RPI 616

Solicitação de exame técnico

#4.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

07/26/1994

RPI 1234

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