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Official data from INPI

COMPOSIÇÃO ENCOLANTE E PROCESSO PARA ENCOLANTE INTERNO OU EXTERNO DE PAPEL

ConcedidaInvention Patent

Application data

Number

PI8000906

Type

Invention Patent

Filing

02/14/1980

Publication

-

Progress at the INPI

  1. Filing02/14/80
  2. Publication
  3. Examination10/18/83
  4. Allowance02/09/88
  5. Grant07/26/88
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. I. (pessoa física)

US

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Inventors

D. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

Deferimento

#9.1

02/09/1988

RPI 903

Conhecimento de parecer técnico

#7.1

12/04/1984

RPI 737

Solicitação de exame técnico

#4.1

10/18/1983

RPI 678

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C08L 79/00; D21D 3/00; D21H 3/48.

03/20/2018

RPI 2463

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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