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Official data from INPI

LATEX DO POLIMERO AQUOSO E DISPERSAO AQUOSA PARA REVESTIMENTO DE PAPEL

Em AnáliseInvention Patent

Application data

Number

PI7803166

Type

Invention Patent

Filing

05/20/1977

Publication

-

Progress at the INPI

  1. Filing05/20/77
  2. Publication
  3. Examination
  4. Allowance08/02/83
  5. Grant01/31/84
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 09/09/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

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Inventors

L. D. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

09/09/1986

RPI 829

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

11/22/1983

RPI 683

Deferimento

#9.1

08/02/1983

RPI 667

Exigência - art. 36 da LPI

#6.1

09/14/1982

RPI 621

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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