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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE LATEXES DE POLÍMEROS TENDO GRUPOS PENDENTES CORREATIVOS E DE OXAZOLINA

Em AnáliseInvention Patent

Application data

Number

PI8407366

Type

Invention Patent

Filing

10/18/1984

Publication

01/06/1987

Progress at the INPI

  1. Filing10/18/84
  2. Publication01/06/87
  3. Examination03/08/88
  4. Allowance05/09/89
  5. Grant01/09/90
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 09/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

K. H. (pessoa física)

US

L. I. (pessoa física)

US

S. E. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

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

10/18/1988

RPI 939

Solicitação de exame técnico

#4.1

03/08/1988

RPI 907

Notificação de entrada na fase nacional - PCT

#1.3

01/06/1987

RPI 846

Carta-patente expirada

#21.1

Patente extinta em 18/10/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

01/09/1990

RPI 1001

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