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Official data from INPI

PELICULA PARA EMPACOTAMENTO DE MULTIPLAS CAMADAS E PROCESSO PARA FABRICAR A PELICULA

ConcedidaInvention Patent

Application data

Number

PI7902250

Type

Invention Patent

Filing

04/17/1978

Publication

-

Progress at the INPI

  1. Filing04/17/78
  2. Publication
  3. Examination
  4. Allowance02/12/85
  5. Grant07/30/85
  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: 07/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GRACE W R & CO

See this company's full portfolio

Inventors

M. W. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/30/1985

RPI 771

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

07/31/1984

RPI 719

Exigência - art. 36 da LPI

#6.1

01/03/1984

RPI 689

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

20.4

10/09/1990

RPI 1036

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