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Official data from INPI

PAPEL DE SEDA MACIO

Prazo de SigiloInvention Patent

Application data

Number

PI8902849

Type

Invention Patent

Filing

06/14/1989

Publication

09/25/1990

Progress at the INPI

  1. Filing06/14/89
  2. Publication09/25/90
  3. Examination03/09/93
  4. Allowance08/15/95
  5. Grant09/24/96
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Procter & Gamble Company

US

See this company's full portfolio

Inventors

W. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/206,621 · 06/14/1988

US

07/280,119 · 12/05/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/25/1989

RPI 979

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era D21H 3/10.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 14/06/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

09/24/1996

RPI 1347

Notificação para pagamento de retribuição

#13.1

01/30/1996

RPI 1313

Deferimento

#9.1

08/15/1995

RPI 1289

Exigência - art. 36 da LPI

#6.1

08/23/1994

RPI 1238

Solicitação de exame técnico

#4.1

03/09/1993

RPI 1162

Publicação do pedido de patente

#3.1

09/25/1990

RPI 1034

14.7

02/06/1990

RPI 1005

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