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Official data from INPI

PROCESSO PARA A FABRICAÇÃO DE PARTÍCULAS DE POLÍMERO UNIFORMEMENTE DIMENSIONADAS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101115

Type

Invention Patent

Filing

03/21/1991

Publication

11/05/1991

Progress at the INPI

  1. Filing03/21/91
  2. Publication11/05/91
  3. Examination08/11/92
  4. Allowance03/30/99
  5. Grant07/27/99
  6. Expired05/28/13

The letters patent expired on 05/28/2013: 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: 05/28/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rohm And Haas Company

US

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Inventors

A. K. (pessoa física)

US

K. H. (pessoa física)

US

M. F. (pessoa física)

US

M. V. (pessoa física)

US

R. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

497,377 · 03/22/1990

US

662,872 · 03/01/1991

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 21/03/2011

05/28/2013

RPI 2212

Concessão da patente

#16.1

07/27/1999

RPI 1490

Deferimento

#9.1

03/30/1999

RPI 1473

Exigência - art. 36 da LPI

#6.1

10/06/1998

RPI 1450

Exigência - art. 36 da LPI

#6.1

05/12/1998

RPI 1429

Solicitação de exame técnico

#4.1

08/11/1992

RPI 1132

Publicação do pedido de patente

#3.1

11/05/1991

RPI 1092

Pedido de patente depositado

#2.1

09/24/1991

RPI 1086

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