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Official data from INPI

PROCESSO DE PREPARAÇÃO DE INTERMEDIÁRIOS COPOLIMEROS DE BAIXO PESO MOLECULAR DE ETILENO-ALFAOLEFINA

Em AnáliseInvention Patent

Application data

Number

PI8604718

Type

Invention Patent

Filing

09/30/1986

Publication

06/23/1987

Progress at the INPI

  1. Filing09/30/86
  2. Publication06/23/87
  3. Examination11/24/87
  4. Allowance06/20/95
  5. Grant11/28/95
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Uniroyal Chemical Company, Inc.

US

See this company's full portfolio

Inventors

D. M. (pessoa física)

US

Y. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

787.869 · 10/16/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/24/1987

RPI 892

Publicação do pedido de patente

#3.1

06/23/1987

RPI 870

Pedido de patente depositado

#2.1

03/24/1987

RPI 857

Carta-patente expirada

#21.1

Patente extinta em 30/09/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

11/28/1995

RPI 1304

Deferimento

#9.1

06/20/1995

RPI 1281

15.15

01/04/1994

RPI 1205

Republicação - classificação IPC

#15.11

09/15/1992

RPI 1137

Exigência - art. 36 da LPI

#6.1

10/29/1991

RPI 1091

6.2

08/07/1990

RPI 1027

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