IP2M Logo
IP2M

Patent Information & Production OptionsRigid Shell Container with Removable Silicone Liner · Patent CN212638395U

Patent CN212638395U: bibliographic data, legal status, family, a plain-language reading of the claims, plus customization, US compliance points and how a manufacturing project runs.

At a glance

Patent numberCN212638395U (application CN202020149840)
TypeChina utility model (实用新型) - protects product shape and structure
Original titleContainer (容器)
Patent ownerSa Zhirong (萨支容), individual
InventorSa Zhirong
Filing date2020-01-23
Grant date2021-03-02
Status (China)Lapsed - terminated for non-payment of annual fees (recorded 2026-01-23)
Patent familyChinese filings only - no US, European, Japanese, PCT or other filings listed
Cited by8 later documents
SourceGoogle Patents (search for CN212638395U)

What the claims cover, in plain language

Claim 1 - a container with a shell that has a cavity and a top opening, and a liner of flexible material held removably in the shell; the liner has its own top opening and a liquid-tight cavity.

Claims 2-3 - shell and liner each have a bottom and side wall; the top of the liner side wall is detachably joined to the shell side wall; there is a gap between the walls over at least part of them, and their contours can differ. Claims 4-5 - the liner is silicone rubber; the shell is at least partly transparent. Claims 6-8 - the liner bottom rests on the shell bottom; studs on the liner fit holes in the shell base, shaped as characters or patterns. Claims 9-10 - a mounting ledge in the shell and a flange on the liner top, with a bent edge in a groove. Claims 11-13 - a press ring fixed to the shell top that presses the liner top. Claims 14-20 - the same container with a detachable lid that seals the liner top when closed, and further details.

This is a simplified reading for orientation only. The legal scope is defined by the exact claim wording in the official Chinese document.

What this means for US production

This patent was filed only in China, and it lapsed for non-payment of annual fees (recorded in January 2026). It no longer restricts anyone - in China or elsewhere.

Before production, keep in mind:

  • Other patents may exist. Drinkware, food storage and collapsible containers are crowded categories with many US utility and design patents. Use your own shapes and styling and have a freedom-to-operate (FTO) search done by a US patent attorney before volume production.

Customization and manufacturing

What can be customized

AreaOptions
ProductCup, tumbler, food box, kids’ tableware, pet bowl, collapsible versions
ShellTritan, PP or other food-safe plastics; clear or colored
LinerFood-grade or platinum-cured silicone; colors; divided liners
LidPress ring, clip-on lid, sip lid
Base logoLetters, logo or pattern molded through the base
PackagingRetail box, gift sets with spare liners

Things to plan for (US market)

  • Food contact - shell, liner and lid materials must meet FDA food-contact rules; silicone grade and post-curing matter.
  • Children’s tableware - products for children 12 and under need CPSIA testing and a Children’s Product Certificate.
  • Dishwasher and microwave claims - only claim what is tested.

How a project runs

  1. Inquiry - product type, size, materials and quantity.
  2. Design - shell, liner, seal and lid details.
  3. Prototype - samples for leak, fit and wash tests.
  4. Pilot run - small batch to check molding of shell and silicone.
  5. Production - volume production, packaging and shipping.

Quantities & timeline

The shell and lid need injection molds; the silicone liner needs a compression or LSR mold. Send us your product type, size, quantity and target price and we will reply with options.

Patent drawings

Rigid Shell Container with Removable Silicone Liner - Patent Fig. 1
Fig. 1 - Cup 100, assembled: 101 shell; 102 liner; 103 press ring.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 2
Fig. 2 - Cup 100, exploded.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 3
Fig. 3 - Cup 100, exploded from below: base studs and holes.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 4
Fig. 4 - Cup 100, section.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 5
Fig. 5 - Cup 400 with a wavy liner, section.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 6
Fig. 6 - Cup 500, section.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 7
Fig. 7 - Food box 600, closed: 601 shell; 658 lid; 659 clips.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 8
Fig. 8 - Food box 600, exploded: 702 divided liner.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 9
Fig. 9 - Food box, exploded from below.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 10
Fig. 10 - Food box, section.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 11
Fig. 11 - Food box 900, exploded.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 12
Fig. 12 - Food box 900, section.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 13
Fig. 13 - Collapsible cup 1000: 1025-1027 shell sections; 1004 lid.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 14
Fig. 14 - Collapsible cup 1000, collapsed.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 15
Fig. 15 - Collapsible cup 1000, shell sections exploded.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 16
Fig. 16 - Collapsible cup 1000, section extended.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 17
Fig. 17 - Collapsible cup 1000, section collapsed.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 18
Fig. 18 - Collapsible cup 1300.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 19
Fig. 19 - Collapsible cup 1300, collapsed.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 20
Fig. 20 - Collapsible cup 1300, section.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 21
Fig. 21 - Collapsible cup 1300, section collapsed.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 22
Fig. 22 - Collapsible food box 1500.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 23
Fig. 23 - Collapsible food box 1500, collapsed.
Rigid Shell Container with Removable Silicone Liner - Patent Fig. 24
Fig. 24 - Collapsible food box 1500, exploded.

Drawings reproduced from the public patent document for reference.

🔥 Popularity – views

Bring this product to market

  1. ✓ Patent vetted China-only family and legal status checked
  2. 2 Product brief · now How it works, uses and options written up
  3. 3 Prototype First samples for buyers to review
  4. 4 Pilot run Small first batch for launch customers
  5. 5 Volume production Repeat orders at scale

Buyer interest

– of 100 buyers needed to start prototyping

or request a quote Share to speed it up:

One click, no sign-up. Each vote is one real visitor, and products with the most interest go to prototyping first.

Build team: no members yet. Need a partner, co-funding or skills to build this? Join and we introduce the team once it forms.

Join the build team

Want to develop this product with others? Tell us what you can bring. When the team has enough people, we introduce the members to each other by email.

I can help with (pick any)

Letters only. The team list on this page shows your country and the first 5 letters of your name (e.g. "Micha**"); leave the name blank to appear as "Anonymous".

No money is collected on this site. IP2M does not hold or manage funds, and pledges are non-binding. We email you a link to confirm; only confirmed members are introduced to each other. See our privacy policy.

Interested in building this?

Tell us your target market, quantity and timeline. We reply with options for prototyping, small-batch runs or volume production.

More product-ready patents

All Packaging & Containers patents →
Child-Resistant Paperboard Medicine Box with Three-Point Opening - patent drawing

Packaging & Containers

Child-Resistant Paperboard Medicine Box with Three-Point Opening

Paperboard medicine box that opens only when press points on three sides are pushed together.

Patent CN107117365B

Tape-Free Reusable Shipping Box with Zigzag Interlocking Flaps - patent drawing

Packaging & Containers

Tape-Free Reusable Shipping Box with Zigzag Interlocking Flaps

Reusable carton closed without tape: zigzag flaps interlock, tabs tuck in, a U-clip locks the lid.

Patent CN207242262U

Hinge Device for Folding Containers with Integrated Twistlock Hole - patent drawing

Packaging & Containers

Hinge Device for Folding Containers with Integrated Twistlock Hole

Folding container hinge with a built-in twistlock hole and observation port.

Patent CN113460518B

This page is based on the public patent document CN212638395U, assigned to Sa Zhirong (individual). IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.