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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE LÁTEX RETICULADO DE POLÍMERO INTERPENETRANTE

Em AnáliseInvention Patent

Application data

Number

PI8505352

Type

Invention Patent

Filing

10/25/1985

Publication

06/02/1987

Progress at the INPI

  1. Filing10/25/85
  2. Publication06/02/87
  3. Examination10/10/89
  4. Allowance03/12/91
  5. Grant10/29/91
  6. Terminated06/04/96

The patent was granted on 10/29/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/10/1989. 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

D. L. (pessoa física)

US

E. S. (pessoa física)

US

T. K. (pessoa física)

JP

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/10/1989

RPI 990

Publicação do pedido de patente

#3.1

06/02/1987

RPI 867

Pedido de patente depositado

#2.1

01/14/1986

RPI 795

Anuidade - prazo legal encerrado

#18.2

06/04/1996

RPI 1331

Concessão da patente

#16.1

10/29/1991

RPI 1091

Notificação para pagamento de retribuição

#13.1

06/25/1991

RPI 1073

Deferimento

#9.1

03/12/1991

RPI 1058

Exigência - art. 36 da LPI

#6.1

08/21/1990

RPI 1029

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