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Official data from INPI

PROCESSO DE PREPARAÇÃO DE PRÉ-POLÍMERO TERMOFIXÁVEL

Em AnáliseInvention Patent

Application data

Number

PI8505857

Type

Invention Patent

Filing

03/11/1985

Publication

03/25/1986

Progress at the INPI

  1. Filing03/11/85
  2. Publication03/25/86
  3. Examination07/28/87
  4. Allowance10/30/90
  5. Grant05/28/91
  6. Terminated08/15/95

The patent was granted on 05/28/1991 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: 07/28/1987. 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

L. S. (pessoa física)

US

R. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

588.597 · 03/12/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/28/1987

RPI 875

Notificação de entrada na fase nacional - PCT

#1.3

03/25/1986

RPI 805

Anuidade - prazo legal encerrado

#18.2

08/15/1995

RPI 1289

Republicação - classificação IPC

#15.11

11/05/1991

RPI 1092

Concessão da patente

#16.1

05/28/1991

RPI 1069

Notificação para pagamento de retribuição

#13.1

02/13/1991

RPI 1054

Deferimento

#9.1

10/30/1990

RPI 1039

Exigência - art. 36 da LPI

#6.1

05/08/1990

RPI 1017

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