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Official data from INPI

MÉTODO DE PREPARAÇÃO DE UM POLÍMERO ACRÍLICO CARBAMATO-FUNCIONAL

Arquivada/ExtintaInvention Patent

Application data

Number

PI9506118

Type

Invention Patent

Filing

12/28/1995

Publication

12/23/1997

Progress at the INPI

  1. Filing12/28/95
  2. Publication12/23/97
  3. Examination
  4. Allowance03/12/02
  5. Grant08/20/02
  6. Expired12/29/15

The letters patent expired on 12/29/2015: 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: 12/29/2015. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. C. (pessoa física)

US

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Inventors

D. A. (pessoa física)

US

J. R. (pessoa física)

US

J. B. (pessoa física)

US

P. L. (pessoa física)

US

R. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

365648 · 12/29/1994

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 28/12/2015

12/29/2015

RPI 2347

Concessão da patente

#16.1

08/20/2002

RPI 1650

Deferimento

#9.1

03/12/2002

RPI 1627

Exigência - art. 36 da LPI

#6.1

09/11/2001

RPI 1601

Publicação do pedido de patente

#3.1

12/23/1997

RPI 1409

Pedido de patente depositado

#2.1

01/30/1996

RPI 1313

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