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Official data from INPI

PROCESSO PARA PRODUZIR UMA COMPOSICAO AQUOSA PARA REVESTIMENTO DE PAPEL

ConcedidaInvention Patent

Application data

Number

PI7902584

Type

Invention Patent

Filing

04/26/1979

Publication

-

Progress at the INPI

  1. Filing04/26/79
  2. Publication
  3. Examination
  4. Allowance12/13/83
  5. Grant09/25/84
  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: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ASAHI DOW LTD

Inventors

K. T. (pessoa física)

T. S. (pessoa física)

T. K. (pessoa física)

T. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

14.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

04/10/1984

RPI 703

Deferimento

#9.1

12/13/1983

RPI 686

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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